1 // Created on: 2012-01-26
2 // Created by: Kirill GAVRILOV
3 // Copyright (c) 2012-2014 OPEN CASCADE SAS
5 // This file is part of Open CASCADE Technology software library.
7 // This library is free software; you can redistribute it and/or modify it under
8 // the terms of the GNU Lesser General Public License version 2.1 as published
9 // by the Free Software Foundation, with special exception defined in the file
10 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
11 // distribution for complete text of the license and disclaimer of any warranty.
13 // Alternatively, this file may be used under the terms of Open CASCADE
14 // commercial license or contractual agreement.
20 #include <OpenGl_Context.hxx>
22 #include <OpenGl_ArbTBO.hxx>
23 #include <OpenGl_ArbIns.hxx>
24 #include <OpenGl_ArbDbg.hxx>
25 #include <OpenGl_ArbFBO.hxx>
26 #include <OpenGl_ExtGS.hxx>
27 #include <OpenGl_ArbTexBindless.hxx>
28 #include <OpenGl_GlCore44.hxx>
29 #include <OpenGl_FrameBuffer.hxx>
30 #include <OpenGl_Sampler.hxx>
31 #include <OpenGl_ShaderManager.hxx>
32 #include <OpenGl_Workspace.hxx>
33 #include <OpenGl_AspectFace.hxx>
34 #include <Graphic3d_TransformUtils.hxx>
36 #include <Message_Messenger.hxx>
38 #include <NCollection_Vector.hxx>
40 #include <Standard_ProgramError.hxx>
42 IMPLEMENT_STANDARD_RTTIEXT(OpenGl_Context,Standard_Transient)
47 #pragma comment(lib, "libEGL.lib")
51 #elif defined(__APPLE__) && !defined(MACOSX_USE_GLX)
53 #if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
56 #include <OpenGL/OpenGL.h>
57 #include <CoreGraphics/CoreGraphics.h>
60 #include <GL/glx.h> // glXGetProcAddress()
66 #pragma comment (lib, "gl2ps.lib")
73 static const Handle(OpenGl_Resource) NULL_GL_RESOURCE;
74 static const OpenGl_Mat4 THE_IDENTITY_MATRIX;
76 //! Add key-value pair to the dictionary.
77 static void addInfo (TColStd_IndexedDataMapOfStringString& theDict,
78 const TCollection_AsciiString& theKey,
79 const TCollection_AsciiString& theValue)
81 theDict.ChangeFromIndex (theDict.Add (theKey, theValue)) = theValue;
84 //! Add key-value pair to the dictionary.
85 static void addInfo (TColStd_IndexedDataMapOfStringString& theDict,
86 const TCollection_AsciiString& theKey,
89 TCollection_AsciiString aValue (theValue != NULL ? theValue : "");
90 theDict.ChangeFromIndex (theDict.Add (theKey, aValue)) = aValue;
94 // =======================================================================
95 // function : OpenGl_Context
97 // =======================================================================
98 OpenGl_Context::OpenGl_Context (const Handle(OpenGl_Caps)& theCaps)
117 caps (!theCaps.IsNull() ? theCaps : new OpenGl_Caps()),
118 #if defined(GL_ES_VERSION_2_0)
119 hasHighp (Standard_False),
120 hasUintIndex(Standard_False),
121 hasTexRGBA8(Standard_False),
123 hasHighp (Standard_True),
124 hasUintIndex(Standard_True),
125 hasTexRGBA8(Standard_True),
127 arbNPTW (Standard_False),
128 arbTexRG (Standard_False),
129 arbTexFloat (Standard_False),
130 arbTexBindless (NULL),
132 arbTboRGB32 (Standard_False),
138 extBgra(Standard_False),
139 extAnis(Standard_False),
140 extPDS (Standard_False),
141 atiMem (Standard_False),
142 nvxMem (Standard_False),
143 mySharedResources (new OpenGl_ResourcesMap()),
144 myDelayed (new OpenGl_DelayReleaseMap()),
145 myUnusedResources (new OpenGl_ResourcesStack()),
147 myGlLibHandle (NULL),
148 myFuncs (new OpenGl_GlFunctions()),
150 myTexClamp (GL_CLAMP_TO_EDGE),
156 myIsInitialized (Standard_False),
157 myIsStereoBuffers (Standard_False),
158 myIsGlNormalizeEnabled (Standard_False),
159 #if !defined(GL_ES_VERSION_2_0)
160 myPointSpriteOrig (GL_UPPER_LEFT),
161 myRenderMode (GL_RENDER),
162 myPolygonMode (GL_FILL),
164 myPointSpriteOrig (0),
168 myToCullBackFaces (false),
172 myIsGlDebugCtx (Standard_False),
173 myResolutionRatio (1.0f)
180 // system-dependent fields
181 #if defined(HAVE_EGL)
182 myDisplay = (Aspect_Display )EGL_NO_DISPLAY;
183 myWindow = (Aspect_Drawable )EGL_NO_SURFACE;
184 myGContext = (Aspect_RenderingContext )EGL_NO_CONTEXT;
185 #elif defined(_WIN32)
189 #elif defined(__APPLE__) && !defined(MACOSX_USE_GLX)
190 // Vendors can not extend functionality on this system
191 // and developers are limited to OpenGL support provided by Mac OS X SDK.
192 // We retrieve function pointers from system library
193 // to generalize extensions support on all platforms.
194 // In this way we also reach binary compatibility benefit between OS releases
195 // if some newest functionality is optionally used.
196 // Notice that GL version / extension availability checks are required
197 // because function pointers may be available but not functionality itself
198 // (depends on renderer).
199 #if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
201 myGlLibHandle = dlopen ("/System/Library/Frameworks/OpenGLES.framework/OpenGLES", RTLD_LAZY);
204 myGlLibHandle = dlopen ("/System/Library/Frameworks/OpenGL.framework/Versions/Current/OpenGL", RTLD_LAZY);
212 memset (myFuncs.operator->(), 0, sizeof(OpenGl_GlFunctions));
213 myShaderManager = new OpenGl_ShaderManager (this);
216 // =======================================================================
217 // function : ~OpenGl_Context
219 // =======================================================================
220 OpenGl_Context::~OpenGl_Context()
222 // release clean up queue
225 #if !defined(GL_ES_VERSION_2_0)
226 // release default VAO
227 if (myDefaultVao != 0
231 core32->glDeleteVertexArrays (1, &myDefaultVao);
236 // release default FBO
237 if (!myDefaultFbo.IsNull())
239 myDefaultFbo->Release (this);
240 myDefaultFbo.Nullify();
243 // release shared resources if any
244 if (mySharedResources->GetRefCount() <= 1)
246 myShaderManager.Nullify();
247 for (NCollection_DataMap<TCollection_AsciiString, Handle(OpenGl_Resource)>::Iterator anIter (*mySharedResources);
248 anIter.More(); anIter.Next())
250 anIter.Value()->Release (this);
253 // release delayed resources added during deletion of shared resources
254 while (!myUnusedResources->IsEmpty())
256 myUnusedResources->First()->Release (this);
257 myUnusedResources->RemoveFirst();
260 else if (myShaderManager->IsSameContext (this))
262 myShaderManager->SetContext (NULL);
264 mySharedResources.Nullify();
267 // release sampler object
268 if (!myTexSampler.IsNull())
270 myTexSampler->Release (this);
278 #if !defined(GL_ES_VERSION_2_0)
280 glGetPointerv (GL_DEBUG_CALLBACK_USER_PARAM, &aPtr);
284 arbDbg->glDebugMessageCallback (NULL, NULL);
286 myIsGlDebugCtx = Standard_False;
290 // =======================================================================
291 // function : forcedRelease
293 // =======================================================================
294 void OpenGl_Context::forcedRelease()
297 for (NCollection_DataMap<TCollection_AsciiString, Handle(OpenGl_Resource)>::Iterator anIter (*mySharedResources);
298 anIter.More(); anIter.Next())
300 anIter.Value()->Release (this);
302 mySharedResources->Clear();
303 myShaderManager->clear();
304 myShaderManager->SetContext (NULL);
306 // release delayed resources added during deletion of shared resources
307 while (!myUnusedResources->IsEmpty())
309 myUnusedResources->First()->Release (this);
310 myUnusedResources->RemoveFirst();
314 // =======================================================================
315 // function : ResizeViewport
317 // =======================================================================
318 void OpenGl_Context::ResizeViewport (const Standard_Integer* theRect)
320 core11fwd->glViewport (theRect[0], theRect[1], theRect[2], theRect[3]);
321 myViewport[0] = theRect[0];
322 myViewport[1] = theRect[1];
323 myViewport[2] = theRect[2];
324 myViewport[3] = theRect[3];
327 #if !defined(GL_ES_VERSION_2_0)
328 inline Standard_Integer stereoToMonoBuffer (const Standard_Integer theBuffer)
344 // =======================================================================
345 // function : SetReadBuffer
347 // =======================================================================
348 void OpenGl_Context::SetReadBuffer (const Standard_Integer theReadBuffer)
350 #if !defined(GL_ES_VERSION_2_0)
351 myReadBuffer = !myIsStereoBuffers ? stereoToMonoBuffer (theReadBuffer) : theReadBuffer;
352 if (myReadBuffer < GL_COLOR_ATTACHMENT0
355 arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER);
357 ::glReadBuffer (myReadBuffer);
359 (void )theReadBuffer;
363 // =======================================================================
364 // function : SetDrawBuffer
366 // =======================================================================
367 void OpenGl_Context::SetDrawBuffer (const Standard_Integer theDrawBuffer)
369 #if !defined(GL_ES_VERSION_2_0)
370 myDrawBuffer = !myIsStereoBuffers ? stereoToMonoBuffer (theDrawBuffer) : theDrawBuffer;
371 if (myDrawBuffer < GL_COLOR_ATTACHMENT0
374 arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER);
376 ::glDrawBuffer (myDrawBuffer);
378 (void )theDrawBuffer;
382 // =======================================================================
383 // function : SetCullBackFaces
385 // =======================================================================
386 void OpenGl_Context::SetCullBackFaces (bool theToEnable)
388 if (myToCullBackFaces == theToEnable)
393 myToCullBackFaces = theToEnable;
396 //glCullFace (GL_BACK); GL_BACK by default
397 core11fwd->glEnable (GL_CULL_FACE);
401 core11fwd->glDisable (GL_CULL_FACE);
405 // =======================================================================
406 // function : FetchState
408 // =======================================================================
409 void OpenGl_Context::FetchState()
411 #if !defined(GL_ES_VERSION_2_0)
412 // cache feedback mode state
415 ::glGetIntegerv (GL_RENDER_MODE, &myRenderMode);
418 // cache buffers state
419 ::glGetIntegerv (GL_READ_BUFFER, &myReadBuffer);
420 ::glGetIntegerv (GL_DRAW_BUFFER, &myDrawBuffer);
424 // =======================================================================
427 // =======================================================================
428 void OpenGl_Context::Share (const Handle(OpenGl_Context)& theShareCtx)
430 if (!theShareCtx.IsNull())
432 mySharedResources = theShareCtx->mySharedResources;
433 myDelayed = theShareCtx->myDelayed;
434 myUnusedResources = theShareCtx->myUnusedResources;
435 myShaderManager = theShareCtx->myShaderManager;
439 #if !defined(__APPLE__) || defined(MACOSX_USE_GLX)
441 // =======================================================================
442 // function : IsCurrent
444 // =======================================================================
445 Standard_Boolean OpenGl_Context::IsCurrent() const
447 #if defined(HAVE_EGL)
448 if ((EGLDisplay )myDisplay == EGL_NO_DISPLAY
449 || (EGLSurface )myWindow == EGL_NO_SURFACE
450 || (EGLContext )myGContext == EGL_NO_CONTEXT)
452 return Standard_False;
455 return (((EGLDisplay )myDisplay == eglGetCurrentDisplay())
456 && ((EGLContext )myGContext == eglGetCurrentContext())
457 && ((EGLSurface )myWindow == eglGetCurrentSurface (EGL_DRAW)));
458 #elif defined(_WIN32)
459 if (myWindowDC == NULL || myGContext == NULL)
461 return Standard_False;
463 return (( (HDC )myWindowDC == wglGetCurrentDC())
464 && ((HGLRC )myGContext == wglGetCurrentContext()));
466 if (myDisplay == NULL || myWindow == 0 || myGContext == 0)
468 return Standard_False;
471 return ( ((Display* )myDisplay == glXGetCurrentDisplay())
472 && ((GLXContext )myGContext == glXGetCurrentContext())
473 && ((GLXDrawable )myWindow == glXGetCurrentDrawable()));
477 // =======================================================================
478 // function : MakeCurrent
480 // =======================================================================
481 Standard_Boolean OpenGl_Context::MakeCurrent()
483 #if defined(HAVE_EGL)
484 if ((EGLDisplay )myDisplay == EGL_NO_DISPLAY
485 || (EGLSurface )myWindow == EGL_NO_SURFACE
486 || (EGLContext )myGContext == EGL_NO_CONTEXT)
488 Standard_ProgramError_Raise_if (myIsInitialized, "OpenGl_Context::Init() should be called before!");
489 return Standard_False;
492 if (eglMakeCurrent ((EGLDisplay )myDisplay, (EGLSurface )myWindow, (EGLSurface )myWindow, (EGLContext )myGContext) != EGL_TRUE)
494 // if there is no current context it might be impossible to use glGetError() correctly
495 PushMessage (GL_DEBUG_SOURCE_WINDOW_SYSTEM, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH,
496 "eglMakeCurrent() has failed!");
497 myIsInitialized = Standard_False;
498 return Standard_False;
500 #elif defined(_WIN32)
501 if (myWindowDC == NULL || myGContext == NULL)
503 Standard_ProgramError_Raise_if (myIsInitialized, "OpenGl_Context::Init() should be called before!");
504 return Standard_False;
507 // technically it should be safe to activate already bound GL context
508 // however some drivers (Intel etc.) may FAIL doing this for unknown reason
511 myShaderManager->SetContext (this);
512 return Standard_True;
514 else if (wglMakeCurrent ((HDC )myWindowDC, (HGLRC )myGContext) != TRUE)
516 // notice that glGetError() couldn't be used here!
517 wchar_t* aMsgBuff = NULL;
518 DWORD anErrorCode = GetLastError();
519 FormatMessageW (FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
520 NULL, anErrorCode, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (wchar_t* )&aMsgBuff, 0, NULL);
521 TCollection_ExtendedString aMsg ("wglMakeCurrent() has failed. ");
522 if (aMsgBuff != NULL)
524 aMsg += (Standard_ExtString )aMsgBuff;
525 LocalFree (aMsgBuff);
527 PushMessage (GL_DEBUG_SOURCE_WINDOW_SYSTEM, GL_DEBUG_TYPE_ERROR, (unsigned int )anErrorCode, GL_DEBUG_SEVERITY_HIGH, aMsg);
528 myIsInitialized = Standard_False;
529 return Standard_False;
532 if (myDisplay == NULL || myWindow == 0 || myGContext == 0)
534 Standard_ProgramError_Raise_if (myIsInitialized, "OpenGl_Context::Init() should be called before!");
535 return Standard_False;
538 if (!glXMakeCurrent ((Display* )myDisplay, (GLXDrawable )myWindow, (GLXContext )myGContext))
540 // if there is no current context it might be impossible to use glGetError() correctly
541 PushMessage (GL_DEBUG_SOURCE_WINDOW_SYSTEM, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH,
542 "glXMakeCurrent() has failed!");
543 myIsInitialized = Standard_False;
544 return Standard_False;
547 myShaderManager->SetContext (this);
548 return Standard_True;
551 // =======================================================================
552 // function : SwapBuffers
554 // =======================================================================
555 void OpenGl_Context::SwapBuffers()
557 #if defined(HAVE_EGL)
558 if ((EGLSurface )myWindow != EGL_NO_SURFACE)
560 eglSwapBuffers ((EGLDisplay )myDisplay, (EGLSurface )myWindow);
562 #elif defined(_WIN32)
563 if ((HDC )myWindowDC != NULL)
565 ::SwapBuffers ((HDC )myWindowDC);
569 if ((Display* )myDisplay != NULL)
571 glXSwapBuffers ((Display* )myDisplay, (GLXDrawable )myWindow);
578 // =======================================================================
579 // function : SetSwapInterval
581 // =======================================================================
582 Standard_Boolean OpenGl_Context::SetSwapInterval (const Standard_Integer theInterval)
584 #if defined(HAVE_EGL)
585 if (::eglSwapInterval ((EGLDisplay )myDisplay, theInterval) == EGL_TRUE)
587 return Standard_True;
589 #elif defined(_WIN32)
590 if (myFuncs->wglSwapIntervalEXT != NULL)
592 myFuncs->wglSwapIntervalEXT (theInterval);
593 return Standard_True;
595 #elif defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
597 #elif defined(__APPLE__)
598 if (::CGLSetParameter (CGLGetCurrentContext(), kCGLCPSwapInterval, &theInterval) == kCGLNoError)
600 return Standard_True;
603 if (theInterval == -1
604 && myFuncs->glXSwapIntervalEXT != NULL)
606 typedef int (*glXSwapIntervalEXT_t_x)(Display* theDisplay, GLXDrawable theDrawable, int theInterval);
607 glXSwapIntervalEXT_t_x aFuncPtr = (glXSwapIntervalEXT_t_x )myFuncs->glXSwapIntervalEXT;
608 aFuncPtr ((Display* )myDisplay, (GLXDrawable )myWindow, theInterval);
609 return Standard_True;
611 else if (myFuncs->glXSwapIntervalSGI != NULL)
613 myFuncs->glXSwapIntervalSGI (theInterval);
614 return Standard_True;
617 return Standard_False;
620 // =======================================================================
621 // function : findProc
623 // =======================================================================
624 void* OpenGl_Context::findProc (const char* theFuncName)
626 #if defined(HAVE_EGL)
627 return (void* )eglGetProcAddress (theFuncName);
628 #elif defined(_WIN32)
629 return (void* )wglGetProcAddress (theFuncName);
630 #elif defined(__APPLE__) && !defined(MACOSX_USE_GLX)
631 return (myGlLibHandle != NULL) ? dlsym (myGlLibHandle, theFuncName) : NULL;
633 return (void* )glXGetProcAddress ((const GLubyte* )theFuncName);
637 // =======================================================================
638 // function : CheckExtension
640 // =======================================================================
641 Standard_Boolean OpenGl_Context::CheckExtension (const char* theExtName) const
643 if (theExtName == NULL)
646 std::cerr << "CheckExtension called with NULL string!\n";
648 return Standard_False;
651 #if !defined(GL_ES_VERSION_2_0)
652 // available since OpenGL 3.0
653 // and the ONLY way to check extensions with OpenGL 3.1+ core profile
654 if (IsGlGreaterEqual (3, 0)
655 && myFuncs->glGetStringi != NULL)
658 ::glGetIntegerv (GL_NUM_EXTENSIONS, &anExtNb);
659 const size_t anExtNameLen = strlen (theExtName);
660 for (GLint anIter = 0; anIter < anExtNb; ++anIter)
662 const char* anExtension = (const char* )myFuncs->glGetStringi (GL_EXTENSIONS, (GLuint )anIter);
663 const size_t aTestExtNameLen = strlen (anExtension);
664 if (aTestExtNameLen == anExtNameLen
665 && strncmp (anExtension, theExtName, anExtNameLen) == 0)
667 return Standard_True;
670 return Standard_False;
674 // use old way with huge string for all extensions
675 const char* anExtString = (const char* )glGetString (GL_EXTENSIONS);
676 if (anExtString == NULL)
678 Messenger()->Send ("TKOpenGL: glGetString (GL_EXTENSIONS) has returned NULL! No GL context?", Message_Warning);
679 return Standard_False;
681 return CheckExtension (anExtString, theExtName);
684 // =======================================================================
685 // function : CheckExtension
687 // =======================================================================
688 Standard_Boolean OpenGl_Context::CheckExtension (const char* theExtString,
689 const char* theExtName)
691 if (theExtString == NULL)
693 return Standard_False;
696 // Search for theExtName in the extensions string.
697 // Use of strstr() is not sufficient because extension names can be prefixes of other extension names.
698 char* aPtrIter = (char* )theExtString;
699 const char* aPtrEnd = aPtrIter + strlen (theExtString);
700 const size_t anExtNameLen = strlen (theExtName);
701 while (aPtrIter < aPtrEnd)
703 const size_t n = strcspn (aPtrIter, " ");
704 if ((n == anExtNameLen) && (strncmp (aPtrIter, theExtName, anExtNameLen) == 0))
706 return Standard_True;
710 return Standard_False;
713 #if !defined(__APPLE__) || defined(MACOSX_USE_GLX)
715 // =======================================================================
718 // =======================================================================
719 Standard_Boolean OpenGl_Context::Init (const Standard_Boolean theIsCoreProfile)
723 return Standard_True;
726 #if defined(HAVE_EGL)
727 myDisplay = (Aspect_Display )eglGetCurrentDisplay();
728 myGContext = (Aspect_RenderingContext )eglGetCurrentContext();
729 myWindow = (Aspect_Drawable )eglGetCurrentSurface(EGL_DRAW);
730 #elif defined(_WIN32)
731 myWindowDC = (Aspect_Handle )wglGetCurrentDC();
732 myGContext = (Aspect_RenderingContext )wglGetCurrentContext();
734 myDisplay = (Aspect_Display )glXGetCurrentDisplay();
735 myGContext = (Aspect_RenderingContext )glXGetCurrentContext();
736 myWindow = (Aspect_Drawable )glXGetCurrentDrawable();
738 if (myGContext == NULL)
740 return Standard_False;
743 init (theIsCoreProfile);
744 myIsInitialized = Standard_True;
745 return Standard_True;
750 // =======================================================================
753 // =======================================================================
754 #if defined(HAVE_EGL)
755 Standard_Boolean OpenGl_Context::Init (const Aspect_Drawable theEglSurface,
756 const Aspect_Display theEglDisplay,
757 const Aspect_RenderingContext theEglContext,
758 const Standard_Boolean theIsCoreProfile)
759 #elif defined(_WIN32)
760 Standard_Boolean OpenGl_Context::Init (const Aspect_Handle theWindow,
761 const Aspect_Handle theWindowDC,
762 const Aspect_RenderingContext theGContext,
763 const Standard_Boolean theIsCoreProfile)
764 #elif defined(__APPLE__) && !defined(MACOSX_USE_GLX)
766 #if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
767 Standard_Boolean OpenGl_Context::Init (EAGLContext* theGContext,
768 const Standard_Boolean theIsCoreProfile)
770 Standard_Boolean OpenGl_Context::Init (NSOpenGLContext* theGContext,
771 const Standard_Boolean theIsCoreProfile)
775 Standard_Boolean OpenGl_Context::Init (const Aspect_Drawable theWindow,
776 const Aspect_Display theDisplay,
777 const Aspect_RenderingContext theGContext,
778 const Standard_Boolean theIsCoreProfile)
781 Standard_ProgramError_Raise_if (myIsInitialized, "OpenGl_Context::Init() should be called only once!");
782 #if defined(HAVE_EGL)
783 myWindow = theEglSurface;
784 myGContext = theEglContext;
785 myDisplay = theEglDisplay;
786 #elif defined(_WIN32)
787 myWindow = theWindow;
788 myGContext = theGContext;
789 myWindowDC = theWindowDC;
790 #elif defined(__APPLE__) && !defined(MACOSX_USE_GLX)
791 myGContext = theGContext;
793 myWindow = theWindow;
794 myGContext = theGContext;
795 myDisplay = theDisplay;
797 if (myGContext == NULL || !MakeCurrent())
799 return Standard_False;
802 init (theIsCoreProfile);
803 myIsInitialized = Standard_True;
804 return Standard_True;
807 // =======================================================================
808 // function : ResetErrors
810 // =======================================================================
811 void OpenGl_Context::ResetErrors (const bool theToPrintErrors)
814 int anErr = ::glGetError();
815 if (!theToPrintErrors)
817 for (; anErr != GL_NO_ERROR && aPrevErr != anErr; aPrevErr = anErr, anErr = ::glGetError())
824 for (; anErr != GL_NO_ERROR && aPrevErr != anErr; aPrevErr = anErr, anErr = ::glGetError())
826 TCollection_ExtendedString anErrId;
829 case GL_INVALID_ENUM: anErrId = "GL_INVALID_ENUM"; break;
830 case GL_INVALID_VALUE: anErrId = "GL_INVALID_VALUE"; break;
831 case GL_INVALID_OPERATION: anErrId = "GL_INVALID_OPERATION"; break;
832 #ifdef GL_STACK_OVERFLOW
833 case GL_STACK_OVERFLOW: anErrId = "GL_STACK_OVERFLOW"; break;
834 case GL_STACK_UNDERFLOW: anErrId = "GL_STACK_UNDERFLOW"; break;
836 case GL_OUT_OF_MEMORY: anErrId = "GL_OUT_OF_MEMORY"; break;
837 case GL_INVALID_FRAMEBUFFER_OPERATION:
838 anErrId = "GL_INVALID_FRAMEBUFFER_OPERATION";
841 anErrId = TCollection_ExtendedString("#") + anErr;
845 const TCollection_ExtendedString aMsg = TCollection_ExtendedString ("Unhandled GL error: ") + anErrId;
846 PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_OTHER, 0, GL_DEBUG_SEVERITY_LOW, aMsg);
850 // =======================================================================
851 // function : ReadGlVersion
853 // =======================================================================
854 void OpenGl_Context::ReadGlVersion (Standard_Integer& theGlVerMajor,
855 Standard_Integer& theGlVerMinor)
861 #ifdef GL_MAJOR_VERSION
862 // available since OpenGL 3.0 and OpenGL 3.0 ES
863 GLint aMajor = 0, aMinor = 0;
864 glGetIntegerv (GL_MAJOR_VERSION, &aMajor);
865 glGetIntegerv (GL_MINOR_VERSION, &aMinor);
866 // glGetError() sometimes does not report an error here even if
867 // GL does not know GL_MAJOR_VERSION and GL_MINOR_VERSION constants.
868 // This happens on some renderers like e.g. Cygwin MESA.
869 // Thus checking additionally if GL has put anything to
870 // the output variables.
871 if (::glGetError() == GL_NO_ERROR && aMajor != 0 && aMinor != 0)
873 theGlVerMajor = aMajor;
874 theGlVerMinor = aMinor;
877 for (GLenum anErr = ::glGetError(), aPrevErr = GL_NO_ERROR;; aPrevErr = anErr, anErr = ::glGetError())
879 if (anErr == GL_NO_ERROR
880 || anErr == aPrevErr)
887 // Read version string.
888 // Notice that only first two numbers split by point '2.1 XXXXX' are significant.
889 // Following trash (after space) is vendor-specific.
890 // New drivers also returns micro version of GL like '3.3.0' which has no meaning
891 // and should be considered as vendor-specific too.
892 const char* aVerStr = (const char* )glGetString (GL_VERSION);
893 if (aVerStr == NULL || *aVerStr == '\0')
895 // invalid GL context
899 //#if defined(GL_ES_VERSION_2_0)
900 // skip "OpenGL ES-** " section
901 for (; *aVerStr != '\0'; ++aVerStr)
903 if (*aVerStr >= '0' && *aVerStr <= '9')
910 // parse string for major number
914 while (aVerStr[aMajIter] >= '0' && aVerStr[aMajIter] <= '9')
918 if (aMajIter == 0 || aMajIter >= sizeof(aMajorStr))
922 memcpy (aMajorStr, aVerStr, aMajIter);
923 aMajorStr[aMajIter] = '\0';
925 // parse string for minor number
926 aVerStr += aMajIter + 1;
928 while (aVerStr[aMinIter] >= '0' && aVerStr[aMinIter] <= '9')
932 if (aMinIter == 0 || aMinIter >= sizeof(aMinorStr))
936 memcpy (aMinorStr, aVerStr, aMinIter);
937 aMinorStr[aMinIter] = '\0';
940 theGlVerMajor = atoi (aMajorStr);
941 theGlVerMinor = atoi (aMinorStr);
943 if (theGlVerMajor <= 0)
950 static Standard_CString THE_DBGMSG_UNKNOWN = "UNKNOWN";
951 static Standard_CString THE_DBGMSG_SOURCES[] =
953 ".OpenGL", // GL_DEBUG_SOURCE_API
954 ".WinSystem", // GL_DEBUG_SOURCE_WINDOW_SYSTEM
955 ".GLSL", // GL_DEBUG_SOURCE_SHADER_COMPILER
956 ".3rdParty", // GL_DEBUG_SOURCE_THIRD_PARTY
957 "", // GL_DEBUG_SOURCE_APPLICATION
958 ".Other" // GL_DEBUG_SOURCE_OTHER
961 static Standard_CString THE_DBGMSG_TYPES[] =
963 "Error", // GL_DEBUG_TYPE_ERROR
964 "Deprecated", // GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR
965 "Undef. behavior", // GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR
966 "Portability", // GL_DEBUG_TYPE_PORTABILITY
967 "Performance", // GL_DEBUG_TYPE_PERFORMANCE
968 "Other" // GL_DEBUG_TYPE_OTHER
971 static Standard_CString THE_DBGMSG_SEV_HIGH = "High"; // GL_DEBUG_SEVERITY_HIGH
972 static Standard_CString THE_DBGMSG_SEV_MEDIUM = "Medium"; // GL_DEBUG_SEVERITY_MEDIUM
973 static Standard_CString THE_DBGMSG_SEV_LOW = "Low"; // GL_DEBUG_SEVERITY_LOW
975 //! Callback for GL_ARB_debug_output extension
976 static void APIENTRY debugCallbackWrap(unsigned int theSource,
977 unsigned int theType,
979 unsigned int theSeverity,
981 const char* theMessage,
982 const void* theUserParam)
984 OpenGl_Context* aCtx = (OpenGl_Context* )theUserParam;
985 aCtx->PushMessage (theSource, theType, theId, theSeverity, theMessage);
988 // =======================================================================
989 // function : PushMessage
991 // =======================================================================
992 void OpenGl_Context::PushMessage (const unsigned int theSource,
993 const unsigned int theType,
994 const unsigned int theId,
995 const unsigned int theSeverity,
996 const TCollection_ExtendedString& theMessage)
998 if (caps->suppressExtraMsg
999 && theSource >= GL_DEBUG_SOURCE_API
1000 && theSource <= GL_DEBUG_SOURCE_OTHER
1001 && myFilters[theSource - GL_DEBUG_SOURCE_API].Contains (theId))
1006 Standard_CString& aSrc = (theSource >= GL_DEBUG_SOURCE_API
1007 && theSource <= GL_DEBUG_SOURCE_OTHER)
1008 ? THE_DBGMSG_SOURCES[theSource - GL_DEBUG_SOURCE_API]
1009 : THE_DBGMSG_UNKNOWN;
1010 Standard_CString& aType = (theType >= GL_DEBUG_TYPE_ERROR
1011 && theType <= GL_DEBUG_TYPE_OTHER)
1012 ? THE_DBGMSG_TYPES[theType - GL_DEBUG_TYPE_ERROR]
1013 : THE_DBGMSG_UNKNOWN;
1014 Standard_CString& aSev = theSeverity == GL_DEBUG_SEVERITY_HIGH
1015 ? THE_DBGMSG_SEV_HIGH
1016 : (theSeverity == GL_DEBUG_SEVERITY_MEDIUM
1017 ? THE_DBGMSG_SEV_MEDIUM
1018 : THE_DBGMSG_SEV_LOW);
1019 Message_Gravity aGrav = theSeverity == GL_DEBUG_SEVERITY_HIGH
1021 : (theSeverity == GL_DEBUG_SEVERITY_MEDIUM
1025 TCollection_ExtendedString aMsg;
1026 aMsg += "TKOpenGl"; aMsg += aSrc;
1027 aMsg += " | Type: "; aMsg += aType;
1028 aMsg += " | ID: "; aMsg += (Standard_Integer )theId;
1029 aMsg += " | Severity: "; aMsg += aSev;
1030 aMsg += " | Message:\n ";
1032 Messenger()->Send (aMsg, aGrav);
1035 // =======================================================================
1036 // function : ExcludeMessage
1038 // ======================================================================
1039 Standard_Boolean OpenGl_Context::ExcludeMessage (const unsigned int theSource,
1040 const unsigned int theId)
1042 return theSource >= GL_DEBUG_SOURCE_API
1043 && theSource <= GL_DEBUG_SOURCE_OTHER
1044 && myFilters[theSource - GL_DEBUG_SOURCE_API].Add (theId);
1047 // =======================================================================
1048 // function : IncludeMessage
1050 // ======================================================================
1051 Standard_Boolean OpenGl_Context::IncludeMessage (const unsigned int theSource,
1052 const unsigned int theId)
1054 return theSource >= GL_DEBUG_SOURCE_API
1055 && theSource <= GL_DEBUG_SOURCE_OTHER
1056 && myFilters[theSource - GL_DEBUG_SOURCE_API].Remove (theId);
1059 // =======================================================================
1060 // function : checkWrongVersion
1062 // ======================================================================
1063 void OpenGl_Context::checkWrongVersion (const Standard_Integer theGlVerMajor,
1064 const Standard_Integer theGlVerMinor)
1066 if (!IsGlGreaterEqual (theGlVerMajor, theGlVerMinor))
1071 TCollection_ExtendedString aMsg = TCollection_ExtendedString()
1072 + "Error! OpenGL context reports version "
1073 + myGlVerMajor + "." + myGlVerMinor
1074 + " but does not export required functions for "
1075 + theGlVerMajor + "." + theGlVerMinor;
1076 PushMessage (GL_DEBUG_SOURCE_APPLICATION,
1077 GL_DEBUG_TYPE_ERROR,
1079 GL_DEBUG_SEVERITY_HIGH,
1083 // =======================================================================
1086 // =======================================================================
1087 void OpenGl_Context::init (const Standard_Boolean theIsCoreProfile)
1092 myMaxMsaaSamples = 0;
1093 ReadGlVersion (myGlVerMajor, myGlVerMinor);
1094 myVendor = (const char* )::glGetString (GL_VENDOR);
1095 if (!caps->ffpEnable
1096 && !IsGlGreaterEqual (2, 0))
1098 caps->ffpEnable = true;
1099 TCollection_ExtendedString aMsg =
1100 TCollection_ExtendedString("OpenGL driver is too old! Context info:\n")
1101 + " Vendor: " + (const char* )::glGetString (GL_VENDOR) + "\n"
1102 + " Renderer: " + (const char* )::glGetString (GL_RENDERER) + "\n"
1103 + " Version: " + (const char* )::glGetString (GL_VERSION) + "\n"
1104 + " Fallback using deprecated fixed-function pipeline.\n"
1105 + " Visualization might work incorrectly.\n"
1106 " Consider upgrading the graphics driver.";
1107 PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_PORTABILITY, 0, GL_DEBUG_SEVERITY_HIGH, aMsg);
1110 #if defined(GL_ES_VERSION_2_0)
1111 (void )theIsCoreProfile;
1112 const bool isCoreProfile = false;
1115 if (myVendor.Search ("NVIDIA") != -1)
1117 // Buffer detailed info: Buffer object 1 (bound to GL_ARRAY_BUFFER_ARB, usage hint is GL_STATIC_DRAW)
1118 // will use VIDEO memory as the source for buffer object operations.
1119 ExcludeMessage (GL_DEBUG_SOURCE_API, 131185);
1121 if (IsGlGreaterEqual (3, 0))
1123 // retrieve auxiliary function in advance
1124 FindProc ("glGetStringi", myFuncs->glGetStringi);
1127 bool isCoreProfile = false;
1128 if (IsGlGreaterEqual (3, 2))
1130 isCoreProfile = (theIsCoreProfile == Standard_True);
1132 // detect Core profile
1136 ::glGetIntegerv (GL_CONTEXT_PROFILE_MASK, &aProfile);
1137 isCoreProfile = (aProfile & GL_CONTEXT_CORE_PROFILE_BIT) != 0;
1145 core11 = (OpenGl_GlCore11* )(&(*myFuncs));
1147 core11fwd = (OpenGl_GlCore11Fwd* )(&(*myFuncs));
1165 arbTboRGB32 = Standard_False;
1173 #if defined(GL_ES_VERSION_2_0)
1175 hasTexRGBA8 = IsGlGreaterEqual (3, 0)
1176 || CheckExtension ("GL_OES_rgb8_rgba8");
1177 // NPOT textures has limited support within OpenGL ES 2.0
1178 // which are relaxed by OpenGL ES 3.0 or some extensions
1179 //arbNPTW = IsGlGreaterEqual (3, 0)
1180 // || CheckExtension ("GL_OES_texture_npot")
1181 // || CheckExtension ("GL_NV_texture_npot_2D_mipmap");
1182 arbNPTW = Standard_True;
1183 arbTexRG = IsGlGreaterEqual (3, 0)
1184 || CheckExtension ("GL_EXT_texture_rg");
1185 extBgra = CheckExtension ("GL_EXT_texture_format_BGRA8888");
1186 extAnis = CheckExtension ("GL_EXT_texture_filter_anisotropic");
1187 extPDS = CheckExtension ("GL_OES_packed_depth_stencil");
1189 core11fwd = (OpenGl_GlCore11Fwd* )(&(*myFuncs));
1190 if (IsGlGreaterEqual (2, 0))
1192 // enable compatible functions
1193 core20 = (OpenGl_GlCore20* )(&(*myFuncs));
1194 core20fwd = (OpenGl_GlCore20Fwd* )(&(*myFuncs));
1195 core15fwd = (OpenGl_GlCore15Fwd* )(&(*myFuncs));
1196 arbFBO = (OpenGl_ArbFBO* )(&(*myFuncs));
1198 if (IsGlGreaterEqual (3, 0)
1199 && FindProc ("glBlitFramebuffer", myFuncs->glBlitFramebuffer))
1201 arbFBOBlit = (OpenGl_ArbFBOBlit* )(&(*myFuncs));
1203 if (IsGlGreaterEqual (3, 1)
1204 && FindProc ("glTexStorage2DMultisample", myFuncs->glTexStorage2DMultisample))
1206 // MSAA RenderBuffers have been defined in OpenGL ES 3.0,
1207 // but MSAA Textures - only in OpenGL ES 3.1+
1208 ::glGetIntegerv (GL_MAX_SAMPLES, &myMaxMsaaSamples);
1211 hasUintIndex = IsGlGreaterEqual (3, 0)
1212 || CheckExtension ("GL_OES_element_index_uint");
1213 hasHighp = CheckExtension ("GL_OES_fragment_precision_high");
1214 GLint aRange[2] = {0, 0};
1216 ::glGetShaderPrecisionFormat (GL_FRAGMENT_SHADER, GL_HIGH_FLOAT, aRange, &aPrec);
1219 hasHighp = Standard_True;
1222 arbTexFloat = IsGlGreaterEqual (3, 0)
1223 && FindProc ("glTexImage3D", myFuncs->glTexImage3D);
1225 const Standard_Boolean hasTexBuffer32 = IsGlGreaterEqual (3, 2) && FindProc ("glTexBuffer", myFuncs->glTexBuffer);
1226 const Standard_Boolean hasExtTexBuffer = CheckExtension ("GL_EXT_texture_buffer") && FindProc ("glTexBufferEXT", myFuncs->glTexBuffer);
1228 if (hasTexBuffer32 || hasExtTexBuffer)
1230 arbTBO = reinterpret_cast<OpenGl_ArbTBO*> (myFuncs.get());
1233 // initialize debug context extension
1234 if (CheckExtension ("GL_KHR_debug"))
1236 // this functionality become a part of OpenGL ES 3.2
1238 // According to GL_KHR_debug spec, all functions should have KHR suffix.
1239 // However, some implementations can export these functions without suffix.
1240 if (FindProc ("glDebugMessageControlKHR", myFuncs->glDebugMessageControl)
1241 && FindProc ("glDebugMessageInsertKHR", myFuncs->glDebugMessageInsert)
1242 && FindProc ("glDebugMessageCallbackKHR", myFuncs->glDebugMessageCallback)
1243 && FindProc ("glGetDebugMessageLogKHR", myFuncs->glGetDebugMessageLog))
1245 arbDbg = (OpenGl_ArbDbg* )(&(*myFuncs));
1249 && caps->contextDebug)
1251 // setup default callback
1252 myIsGlDebugCtx = Standard_True;
1253 arbDbg->glDebugMessageCallback (debugCallbackWrap, this);
1254 ::glEnable (GL_DEBUG_OUTPUT);
1255 if (caps->contextSyncDebug)
1257 // note that some broken implementations (e.g. simulators) might generate error message on this call
1258 ::glEnable (GL_DEBUG_OUTPUT_SYNCHRONOUS);
1265 myTexClamp = IsGlGreaterEqual (1, 2) ? GL_CLAMP_TO_EDGE : GL_CLAMP;
1267 hasTexRGBA8 = Standard_True;
1268 arbNPTW = CheckExtension ("GL_ARB_texture_non_power_of_two");
1269 arbTexFloat = IsGlGreaterEqual (3, 0)
1270 || CheckExtension ("GL_ARB_texture_float");
1271 extBgra = CheckExtension ("GL_EXT_bgra");
1272 extAnis = CheckExtension ("GL_EXT_texture_filter_anisotropic");
1273 extPDS = CheckExtension ("GL_EXT_packed_depth_stencil");
1274 atiMem = CheckExtension ("GL_ATI_meminfo");
1275 nvxMem = CheckExtension ("GL_NVX_gpu_memory_info");
1277 GLint aStereo = GL_FALSE;
1278 glGetIntegerv (GL_STEREO, &aStereo);
1279 myIsStereoBuffers = aStereo == 1;
1281 // get number of maximum clipping planes
1282 glGetIntegerv (GL_MAX_CLIP_PLANES, &myMaxClipPlanes);
1285 glGetIntegerv (GL_MAX_TEXTURE_SIZE, &myMaxTexDim);
1289 glGetIntegerv (GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &myAnisoMax);
1292 myClippingState.Init (myMaxClipPlanes);
1294 #if !defined(GL_ES_VERSION_2_0)
1312 //! Make record shorter to retrieve function pointer using variable with same name
1313 #define FindProcShort(theFunc) FindProc(#theFunc, myFuncs->theFunc)
1315 // retrieve platform-dependent extensions
1316 #if defined(HAVE_EGL)
1318 #elif defined(_WIN32)
1319 if (FindProcShort (wglGetExtensionsStringARB))
1321 const char* aWglExts = myFuncs->wglGetExtensionsStringARB (wglGetCurrentDC());
1322 if (CheckExtension (aWglExts, "WGL_EXT_swap_control"))
1324 FindProcShort (wglSwapIntervalEXT);
1326 if (CheckExtension (aWglExts, "WGL_ARB_pixel_format"))
1328 FindProcShort (wglChoosePixelFormatARB);
1330 if (CheckExtension (aWglExts, "WGL_ARB_create_context_profile"))
1332 FindProcShort (wglCreateContextAttribsARB);
1334 if (CheckExtension (aWglExts, "WGL_NV_DX_interop"))
1336 FindProcShort (wglDXSetResourceShareHandleNV);
1337 FindProcShort (wglDXOpenDeviceNV);
1338 FindProcShort (wglDXCloseDeviceNV);
1339 FindProcShort (wglDXRegisterObjectNV);
1340 FindProcShort (wglDXUnregisterObjectNV);
1341 FindProcShort (wglDXObjectAccessNV);
1342 FindProcShort (wglDXLockObjectsNV);
1343 FindProcShort (wglDXUnlockObjectsNV);
1346 #elif defined(__APPLE__)
1349 const char* aGlxExts = ::glXQueryExtensionsString ((Display* )myDisplay, DefaultScreen ((Display* )myDisplay));
1350 if (CheckExtension (aGlxExts, "GLX_EXT_swap_control"))
1352 FindProcShort (glXSwapIntervalEXT);
1354 if (CheckExtension (aGlxExts, "GLX_SGI_swap_control"))
1356 FindProcShort (glXSwapIntervalSGI);
1358 if (CheckExtension (aGlxExts, "GLX_MESA_query_renderer"))
1360 FindProcShort (glXQueryRendererIntegerMESA);
1361 FindProcShort (glXQueryCurrentRendererIntegerMESA);
1362 FindProcShort (glXQueryRendererStringMESA);
1363 FindProcShort (glXQueryCurrentRendererStringMESA);
1365 //extSwapTear = CheckExtension (aGlxExts, "GLX_EXT_swap_control_tear");
1368 // load OpenGL 1.2 new functions
1369 has12 = IsGlGreaterEqual (1, 2)
1370 && FindProcShort (glBlendColor)
1371 && FindProcShort (glBlendEquation)
1372 && FindProcShort (glDrawRangeElements)
1373 && FindProcShort (glTexImage3D)
1374 && FindProcShort (glTexSubImage3D)
1375 && FindProcShort (glCopyTexSubImage3D);
1377 // load OpenGL 1.3 new functions
1378 has13 = IsGlGreaterEqual (1, 3)
1379 && FindProcShort (glActiveTexture)
1380 && FindProcShort (glSampleCoverage)
1381 && FindProcShort (glCompressedTexImage3D)
1382 && FindProcShort (glCompressedTexImage2D)
1383 && FindProcShort (glCompressedTexImage1D)
1384 && FindProcShort (glCompressedTexSubImage3D)
1385 && FindProcShort (glCompressedTexSubImage2D)
1386 && FindProcShort (glCompressedTexSubImage1D)
1387 && FindProcShort (glGetCompressedTexImage);
1392 && FindProcShort (glClientActiveTexture)
1393 && FindProcShort (glMultiTexCoord1d)
1394 && FindProcShort (glMultiTexCoord1dv)
1395 && FindProcShort (glMultiTexCoord1f)
1396 && FindProcShort (glMultiTexCoord1fv)
1397 && FindProcShort (glMultiTexCoord1i)
1398 && FindProcShort (glMultiTexCoord1iv)
1399 && FindProcShort (glMultiTexCoord1s)
1400 && FindProcShort (glMultiTexCoord1sv)
1401 && FindProcShort (glMultiTexCoord2d)
1402 && FindProcShort (glMultiTexCoord2dv)
1403 && FindProcShort (glMultiTexCoord2f)
1404 && FindProcShort (glMultiTexCoord2fv)
1405 && FindProcShort (glMultiTexCoord2i)
1406 && FindProcShort (glMultiTexCoord2iv)
1407 && FindProcShort (glMultiTexCoord2s)
1408 && FindProcShort (glMultiTexCoord2sv)
1409 && FindProcShort (glMultiTexCoord3d)
1410 && FindProcShort (glMultiTexCoord3dv)
1411 && FindProcShort (glMultiTexCoord3f)
1412 && FindProcShort (glMultiTexCoord3fv)
1413 && FindProcShort (glMultiTexCoord3i)
1414 && FindProcShort (glMultiTexCoord3iv)
1415 && FindProcShort (glMultiTexCoord3s)
1416 && FindProcShort (glMultiTexCoord3sv)
1417 && FindProcShort (glMultiTexCoord4d)
1418 && FindProcShort (glMultiTexCoord4dv)
1419 && FindProcShort (glMultiTexCoord4f)
1420 && FindProcShort (glMultiTexCoord4fv)
1421 && FindProcShort (glMultiTexCoord4i)
1422 && FindProcShort (glMultiTexCoord4iv)
1423 && FindProcShort (glMultiTexCoord4s)
1424 && FindProcShort (glMultiTexCoord4sv)
1425 && FindProcShort (glLoadTransposeMatrixf)
1426 && FindProcShort (glLoadTransposeMatrixd)
1427 && FindProcShort (glMultTransposeMatrixf)
1428 && FindProcShort (glMultTransposeMatrixd);
1431 // load OpenGL 1.4 new functions
1432 has14 = IsGlGreaterEqual (1, 4)
1433 && FindProcShort (glBlendFuncSeparate)
1434 && FindProcShort (glMultiDrawArrays)
1435 && FindProcShort (glMultiDrawElements)
1436 && FindProcShort (glPointParameterf)
1437 && FindProcShort (glPointParameterfv)
1438 && FindProcShort (glPointParameteri)
1439 && FindProcShort (glPointParameteriv);
1441 // load OpenGL 1.5 new functions
1442 has15 = IsGlGreaterEqual (1, 5)
1443 && FindProcShort (glGenQueries)
1444 && FindProcShort (glDeleteQueries)
1445 && FindProcShort (glIsQuery)
1446 && FindProcShort (glBeginQuery)
1447 && FindProcShort (glEndQuery)
1448 && FindProcShort (glGetQueryiv)
1449 && FindProcShort (glGetQueryObjectiv)
1450 && FindProcShort (glGetQueryObjectuiv)
1451 && FindProcShort (glBindBuffer)
1452 && FindProcShort (glDeleteBuffers)
1453 && FindProcShort (glGenBuffers)
1454 && FindProcShort (glIsBuffer)
1455 && FindProcShort (glBufferData)
1456 && FindProcShort (glBufferSubData)
1457 && FindProcShort (glGetBufferSubData)
1458 && FindProcShort (glMapBuffer)
1459 && FindProcShort (glUnmapBuffer)
1460 && FindProcShort (glGetBufferParameteriv)
1461 && FindProcShort (glGetBufferPointerv);
1463 // load OpenGL 2.0 new functions
1464 has20 = IsGlGreaterEqual (2, 0)
1465 && FindProcShort (glBlendEquationSeparate)
1466 && FindProcShort (glDrawBuffers)
1467 && FindProcShort (glStencilOpSeparate)
1468 && FindProcShort (glStencilFuncSeparate)
1469 && FindProcShort (glStencilMaskSeparate)
1470 && FindProcShort (glAttachShader)
1471 && FindProcShort (glBindAttribLocation)
1472 && FindProcShort (glCompileShader)
1473 && FindProcShort (glCreateProgram)
1474 && FindProcShort (glCreateShader)
1475 && FindProcShort (glDeleteProgram)
1476 && FindProcShort (glDeleteShader)
1477 && FindProcShort (glDetachShader)
1478 && FindProcShort (glDisableVertexAttribArray)
1479 && FindProcShort (glEnableVertexAttribArray)
1480 && FindProcShort (glGetActiveAttrib)
1481 && FindProcShort (glGetActiveUniform)
1482 && FindProcShort (glGetAttachedShaders)
1483 && FindProcShort (glGetAttribLocation)
1484 && FindProcShort (glGetProgramiv)
1485 && FindProcShort (glGetProgramInfoLog)
1486 && FindProcShort (glGetShaderiv)
1487 && FindProcShort (glGetShaderInfoLog)
1488 && FindProcShort (glGetShaderSource)
1489 && FindProcShort (glGetUniformLocation)
1490 && FindProcShort (glGetUniformfv)
1491 && FindProcShort (glGetUniformiv)
1492 && FindProcShort (glGetVertexAttribdv)
1493 && FindProcShort (glGetVertexAttribfv)
1494 && FindProcShort (glGetVertexAttribiv)
1495 && FindProcShort (glGetVertexAttribPointerv)
1496 && FindProcShort (glIsProgram)
1497 && FindProcShort (glIsShader)
1498 && FindProcShort (glLinkProgram)
1499 && FindProcShort (glShaderSource)
1500 && FindProcShort (glUseProgram)
1501 && FindProcShort (glUniform1f)
1502 && FindProcShort (glUniform2f)
1503 && FindProcShort (glUniform3f)
1504 && FindProcShort (glUniform4f)
1505 && FindProcShort (glUniform1i)
1506 && FindProcShort (glUniform2i)
1507 && FindProcShort (glUniform3i)
1508 && FindProcShort (glUniform4i)
1509 && FindProcShort (glUniform1fv)
1510 && FindProcShort (glUniform2fv)
1511 && FindProcShort (glUniform3fv)
1512 && FindProcShort (glUniform4fv)
1513 && FindProcShort (glUniform1iv)
1514 && FindProcShort (glUniform2iv)
1515 && FindProcShort (glUniform3iv)
1516 && FindProcShort (glUniform4iv)
1517 && FindProcShort (glUniformMatrix2fv)
1518 && FindProcShort (glUniformMatrix3fv)
1519 && FindProcShort (glUniformMatrix4fv)
1520 && FindProcShort (glValidateProgram)
1521 && FindProcShort (glVertexAttrib1d)
1522 && FindProcShort (glVertexAttrib1dv)
1523 && FindProcShort (glVertexAttrib1f)
1524 && FindProcShort (glVertexAttrib1fv)
1525 && FindProcShort (glVertexAttrib1s)
1526 && FindProcShort (glVertexAttrib1sv)
1527 && FindProcShort (glVertexAttrib2d)
1528 && FindProcShort (glVertexAttrib2dv)
1529 && FindProcShort (glVertexAttrib2f)
1530 && FindProcShort (glVertexAttrib2fv)
1531 && FindProcShort (glVertexAttrib2s)
1532 && FindProcShort (glVertexAttrib2sv)
1533 && FindProcShort (glVertexAttrib3d)
1534 && FindProcShort (glVertexAttrib3dv)
1535 && FindProcShort (glVertexAttrib3f)
1536 && FindProcShort (glVertexAttrib3fv)
1537 && FindProcShort (glVertexAttrib3s)
1538 && FindProcShort (glVertexAttrib3sv)
1539 && FindProcShort (glVertexAttrib4Nbv)
1540 && FindProcShort (glVertexAttrib4Niv)
1541 && FindProcShort (glVertexAttrib4Nsv)
1542 && FindProcShort (glVertexAttrib4Nub)
1543 && FindProcShort (glVertexAttrib4Nubv)
1544 && FindProcShort (glVertexAttrib4Nuiv)
1545 && FindProcShort (glVertexAttrib4Nusv)
1546 && FindProcShort (glVertexAttrib4bv)
1547 && FindProcShort (glVertexAttrib4d)
1548 && FindProcShort (glVertexAttrib4dv)
1549 && FindProcShort (glVertexAttrib4f)
1550 && FindProcShort (glVertexAttrib4fv)
1551 && FindProcShort (glVertexAttrib4iv)
1552 && FindProcShort (glVertexAttrib4s)
1553 && FindProcShort (glVertexAttrib4sv)
1554 && FindProcShort (glVertexAttrib4ubv)
1555 && FindProcShort (glVertexAttrib4uiv)
1556 && FindProcShort (glVertexAttrib4usv)
1557 && FindProcShort (glVertexAttribPointer);
1559 // load OpenGL 2.1 new functions
1560 has21 = IsGlGreaterEqual (2, 1)
1561 && FindProcShort (glUniformMatrix2x3fv)
1562 && FindProcShort (glUniformMatrix3x2fv)
1563 && FindProcShort (glUniformMatrix2x4fv)
1564 && FindProcShort (glUniformMatrix4x2fv)
1565 && FindProcShort (glUniformMatrix3x4fv)
1566 && FindProcShort (glUniformMatrix4x3fv);
1568 // load GL_ARB_framebuffer_object (added to OpenGL 3.0 core)
1569 const bool hasFBO = (IsGlGreaterEqual (3, 0) || CheckExtension ("GL_ARB_framebuffer_object"))
1570 && FindProcShort (glIsRenderbuffer)
1571 && FindProcShort (glBindRenderbuffer)
1572 && FindProcShort (glDeleteRenderbuffers)
1573 && FindProcShort (glGenRenderbuffers)
1574 && FindProcShort (glRenderbufferStorage)
1575 && FindProcShort (glGetRenderbufferParameteriv)
1576 && FindProcShort (glIsFramebuffer)
1577 && FindProcShort (glBindFramebuffer)
1578 && FindProcShort (glDeleteFramebuffers)
1579 && FindProcShort (glGenFramebuffers)
1580 && FindProcShort (glCheckFramebufferStatus)
1581 && FindProcShort (glFramebufferTexture1D)
1582 && FindProcShort (glFramebufferTexture2D)
1583 && FindProcShort (glFramebufferTexture3D)
1584 && FindProcShort (glFramebufferRenderbuffer)
1585 && FindProcShort (glGetFramebufferAttachmentParameteriv)
1586 && FindProcShort (glGenerateMipmap)
1587 && FindProcShort (glBlitFramebuffer)
1588 && FindProcShort (glRenderbufferStorageMultisample)
1589 && FindProcShort (glFramebufferTextureLayer);
1591 // load GL_ARB_vertex_array_object (added to OpenGL 3.0 core)
1592 const bool hasVAO = (IsGlGreaterEqual (3, 0) || CheckExtension ("GL_ARB_vertex_array_object"))
1593 && FindProcShort (glBindVertexArray)
1594 && FindProcShort (glDeleteVertexArrays)
1595 && FindProcShort (glGenVertexArrays)
1596 && FindProcShort (glIsVertexArray);
1598 // load GL_ARB_map_buffer_range (added to OpenGL 3.0 core)
1599 const bool hasMapBufferRange = (IsGlGreaterEqual (3, 0) || CheckExtension ("GL_ARB_map_buffer_range"))
1600 && FindProcShort (glMapBufferRange)
1601 && FindProcShort (glFlushMappedBufferRange);
1603 // load OpenGL 3.0 new functions
1604 has30 = IsGlGreaterEqual (3, 0)
1607 && hasMapBufferRange
1608 && FindProcShort (glColorMaski)
1609 && FindProcShort (glGetBooleani_v)
1610 && FindProcShort (glGetIntegeri_v)
1611 && FindProcShort (glEnablei)
1612 && FindProcShort (glDisablei)
1613 && FindProcShort (glIsEnabledi)
1614 && FindProcShort (glBeginTransformFeedback)
1615 && FindProcShort (glEndTransformFeedback)
1616 && FindProcShort (glBindBufferRange)
1617 && FindProcShort (glBindBufferBase)
1618 && FindProcShort (glTransformFeedbackVaryings)
1619 && FindProcShort (glGetTransformFeedbackVarying)
1620 && FindProcShort (glClampColor)
1621 && FindProcShort (glBeginConditionalRender)
1622 && FindProcShort (glEndConditionalRender)
1623 && FindProcShort (glVertexAttribIPointer)
1624 && FindProcShort (glGetVertexAttribIiv)
1625 && FindProcShort (glGetVertexAttribIuiv)
1626 && FindProcShort (glVertexAttribI1i)
1627 && FindProcShort (glVertexAttribI2i)
1628 && FindProcShort (glVertexAttribI3i)
1629 && FindProcShort (glVertexAttribI4i)
1630 && FindProcShort (glVertexAttribI1ui)
1631 && FindProcShort (glVertexAttribI2ui)
1632 && FindProcShort (glVertexAttribI3ui)
1633 && FindProcShort (glVertexAttribI4ui)
1634 && FindProcShort (glVertexAttribI1iv)
1635 && FindProcShort (glVertexAttribI2iv)
1636 && FindProcShort (glVertexAttribI3iv)
1637 && FindProcShort (glVertexAttribI4iv)
1638 && FindProcShort (glVertexAttribI1uiv)
1639 && FindProcShort (glVertexAttribI2uiv)
1640 && FindProcShort (glVertexAttribI3uiv)
1641 && FindProcShort (glVertexAttribI4uiv)
1642 && FindProcShort (glVertexAttribI4bv)
1643 && FindProcShort (glVertexAttribI4sv)
1644 && FindProcShort (glVertexAttribI4ubv)
1645 && FindProcShort (glVertexAttribI4usv)
1646 && FindProcShort (glGetUniformuiv)
1647 && FindProcShort (glBindFragDataLocation)
1648 && FindProcShort (glGetFragDataLocation)
1649 && FindProcShort (glUniform1ui)
1650 && FindProcShort (glUniform2ui)
1651 && FindProcShort (glUniform3ui)
1652 && FindProcShort (glUniform4ui)
1653 && FindProcShort (glUniform1uiv)
1654 && FindProcShort (glUniform2uiv)
1655 && FindProcShort (glUniform3uiv)
1656 && FindProcShort (glUniform4uiv)
1657 && FindProcShort (glTexParameterIiv)
1658 && FindProcShort (glTexParameterIuiv)
1659 && FindProcShort (glGetTexParameterIiv)
1660 && FindProcShort (glGetTexParameterIuiv)
1661 && FindProcShort (glClearBufferiv)
1662 && FindProcShort (glClearBufferuiv)
1663 && FindProcShort (glClearBufferfv)
1664 && FindProcShort (glClearBufferfi)
1665 && FindProcShort (glGetStringi);
1667 // load GL_ARB_uniform_buffer_object (added to OpenGL 3.1 core)
1668 const bool hasUBO = (IsGlGreaterEqual (3, 1) || CheckExtension ("GL_ARB_uniform_buffer_object"))
1669 && FindProcShort (glGetUniformIndices)
1670 && FindProcShort (glGetActiveUniformsiv)
1671 && FindProcShort (glGetActiveUniformName)
1672 && FindProcShort (glGetUniformBlockIndex)
1673 && FindProcShort (glGetActiveUniformBlockiv)
1674 && FindProcShort (glGetActiveUniformBlockName)
1675 && FindProcShort (glUniformBlockBinding);
1677 // load GL_ARB_copy_buffer (added to OpenGL 3.1 core)
1678 const bool hasCopyBufSubData = (IsGlGreaterEqual (3, 1) || CheckExtension ("GL_ARB_copy_buffer"))
1679 && FindProcShort (glCopyBufferSubData);
1683 // NPOT textures are required by OpenGL 2.0 specifications
1684 // but doesn't hardware accelerated by some ancient OpenGL 2.1 hardware (GeForce FX, RadeOn 9700 etc.)
1685 arbNPTW = Standard_True;
1686 arbTexRG = Standard_True;
1689 // load OpenGL 3.1 new functions
1690 has31 = IsGlGreaterEqual (3, 1)
1692 && hasCopyBufSubData
1693 && FindProcShort (glDrawArraysInstanced)
1694 && FindProcShort (glDrawElementsInstanced)
1695 && FindProcShort (glTexBuffer)
1696 && FindProcShort (glPrimitiveRestartIndex);
1698 // load GL_ARB_draw_elements_base_vertex (added to OpenGL 3.2 core)
1699 const bool hasDrawElemsBaseVert = (IsGlGreaterEqual (3, 2) || CheckExtension ("GL_ARB_draw_elements_base_vertex"))
1700 && FindProcShort (glDrawElementsBaseVertex)
1701 && FindProcShort (glDrawRangeElementsBaseVertex)
1702 && FindProcShort (glDrawElementsInstancedBaseVertex)
1703 && FindProcShort (glMultiDrawElementsBaseVertex);
1705 // load GL_ARB_provoking_vertex (added to OpenGL 3.2 core)
1706 const bool hasProvokingVert = (IsGlGreaterEqual (3, 2) || CheckExtension ("GL_ARB_provoking_vertex"))
1707 && FindProcShort (glProvokingVertex);
1709 // load GL_ARB_sync (added to OpenGL 3.2 core)
1710 const bool hasSync = (IsGlGreaterEqual (3, 2) || CheckExtension ("GL_ARB_sync"))
1711 && FindProcShort (glFenceSync)
1712 && FindProcShort (glIsSync)
1713 && FindProcShort (glDeleteSync)
1714 && FindProcShort (glClientWaitSync)
1715 && FindProcShort (glWaitSync)
1716 && FindProcShort (glGetInteger64v)
1717 && FindProcShort (glGetSynciv);
1719 // load GL_ARB_texture_multisample (added to OpenGL 3.2 core)
1720 const bool hasTextureMultisample = (IsGlGreaterEqual (3, 2) || CheckExtension ("GL_ARB_texture_multisample"))
1721 && FindProcShort (glTexImage2DMultisample)
1722 && FindProcShort (glTexImage3DMultisample)
1723 && FindProcShort (glGetMultisamplefv)
1724 && FindProcShort (glSampleMaski);
1726 // load OpenGL 3.2 new functions
1727 has32 = IsGlGreaterEqual (3, 2)
1728 && hasDrawElemsBaseVert
1731 && hasTextureMultisample
1732 && FindProcShort (glGetInteger64i_v)
1733 && FindProcShort (glGetBufferParameteri64v)
1734 && FindProcShort (glFramebufferTexture);
1736 // load GL_ARB_blend_func_extended (added to OpenGL 3.3 core)
1737 const bool hasBlendFuncExtended = (IsGlGreaterEqual (3, 3) || CheckExtension ("GL_ARB_blend_func_extended"))
1738 && FindProcShort (glBindFragDataLocationIndexed)
1739 && FindProcShort (glGetFragDataIndex);
1741 // load GL_ARB_sampler_objects (added to OpenGL 3.3 core)
1742 const bool hasSamplerObjects = (IsGlGreaterEqual (3, 3) || CheckExtension ("GL_ARB_sampler_objects"))
1743 && FindProcShort (glGenSamplers)
1744 && FindProcShort (glDeleteSamplers)
1745 && FindProcShort (glIsSampler)
1746 && FindProcShort (glBindSampler)
1747 && FindProcShort (glSamplerParameteri)
1748 && FindProcShort (glSamplerParameteriv)
1749 && FindProcShort (glSamplerParameterf)
1750 && FindProcShort (glSamplerParameterfv)
1751 && FindProcShort (glSamplerParameterIiv)
1752 && FindProcShort (glSamplerParameterIuiv)
1753 && FindProcShort (glGetSamplerParameteriv)
1754 && FindProcShort (glGetSamplerParameterIiv)
1755 && FindProcShort (glGetSamplerParameterfv)
1756 && FindProcShort (glGetSamplerParameterIuiv);
1758 // load GL_ARB_timer_query (added to OpenGL 3.3 core)
1759 const bool hasTimerQuery = (IsGlGreaterEqual (3, 3) || CheckExtension ("GL_ARB_timer_query"))
1760 && FindProcShort (glQueryCounter)
1761 && FindProcShort (glGetQueryObjecti64v)
1762 && FindProcShort (glGetQueryObjectui64v);
1764 // load GL_ARB_vertex_type_2_10_10_10_rev (added to OpenGL 3.3 core)
1765 const bool hasVertType21010101rev = (IsGlGreaterEqual (3, 3) || CheckExtension ("GL_ARB_vertex_type_2_10_10_10_rev"))
1766 && FindProcShort (glVertexAttribP1ui)
1767 && FindProcShort (glVertexAttribP1uiv)
1768 && FindProcShort (glVertexAttribP2ui)
1769 && FindProcShort (glVertexAttribP2uiv)
1770 && FindProcShort (glVertexAttribP3ui)
1771 && FindProcShort (glVertexAttribP3uiv)
1772 && FindProcShort (glVertexAttribP4ui)
1773 && FindProcShort (glVertexAttribP4uiv);
1775 if ( hasVertType21010101rev
1778 // load deprecated functions
1779 const bool hasVertType21010101revExt =
1780 FindProcShort (glVertexP2ui)
1781 && FindProcShort (glVertexP2uiv)
1782 && FindProcShort (glVertexP3ui)
1783 && FindProcShort (glVertexP3uiv)
1784 && FindProcShort (glVertexP4ui)
1785 && FindProcShort (glVertexP4uiv)
1786 && FindProcShort (glTexCoordP1ui)
1787 && FindProcShort (glTexCoordP1uiv)
1788 && FindProcShort (glTexCoordP2ui)
1789 && FindProcShort (glTexCoordP2uiv)
1790 && FindProcShort (glTexCoordP3ui)
1791 && FindProcShort (glTexCoordP3uiv)
1792 && FindProcShort (glTexCoordP4ui)
1793 && FindProcShort (glTexCoordP4uiv)
1794 && FindProcShort (glMultiTexCoordP1ui)
1795 && FindProcShort (glMultiTexCoordP1uiv)
1796 && FindProcShort (glMultiTexCoordP2ui)
1797 && FindProcShort (glMultiTexCoordP2uiv)
1798 && FindProcShort (glMultiTexCoordP3ui)
1799 && FindProcShort (glMultiTexCoordP3uiv)
1800 && FindProcShort (glMultiTexCoordP4ui)
1801 && FindProcShort (glMultiTexCoordP4uiv)
1802 && FindProcShort (glNormalP3ui)
1803 && FindProcShort (glNormalP3uiv)
1804 && FindProcShort (glColorP3ui)
1805 && FindProcShort (glColorP3uiv)
1806 && FindProcShort (glColorP4ui)
1807 && FindProcShort (glColorP4uiv)
1808 && FindProcShort (glSecondaryColorP3ui)
1809 && FindProcShort (glSecondaryColorP3uiv);
1810 (void )hasVertType21010101revExt;
1813 // load OpenGL 3.3 extra functions
1814 has33 = IsGlGreaterEqual (3, 3)
1815 && hasBlendFuncExtended
1816 && hasSamplerObjects
1818 && hasVertType21010101rev
1819 && FindProcShort (glVertexAttribDivisor);
1821 // load GL_ARB_draw_indirect (added to OpenGL 4.0 core)
1822 const bool hasDrawIndirect = (IsGlGreaterEqual (4, 0) || CheckExtension ("GL_ARB_draw_indirect"))
1823 && FindProcShort (glDrawArraysIndirect)
1824 && FindProcShort (glDrawElementsIndirect);
1826 // load GL_ARB_gpu_shader_fp64 (added to OpenGL 4.0 core)
1827 const bool hasShaderFP64 = (IsGlGreaterEqual (4, 0) || CheckExtension ("GL_ARB_gpu_shader_fp64"))
1828 && FindProcShort (glUniform1d)
1829 && FindProcShort (glUniform2d)
1830 && FindProcShort (glUniform3d)
1831 && FindProcShort (glUniform4d)
1832 && FindProcShort (glUniform1dv)
1833 && FindProcShort (glUniform2dv)
1834 && FindProcShort (glUniform3dv)
1835 && FindProcShort (glUniform4dv)
1836 && FindProcShort (glUniformMatrix2dv)
1837 && FindProcShort (glUniformMatrix3dv)
1838 && FindProcShort (glUniformMatrix4dv)
1839 && FindProcShort (glUniformMatrix2x3dv)
1840 && FindProcShort (glUniformMatrix2x4dv)
1841 && FindProcShort (glUniformMatrix3x2dv)
1842 && FindProcShort (glUniformMatrix3x4dv)
1843 && FindProcShort (glUniformMatrix4x2dv)
1844 && FindProcShort (glUniformMatrix4x3dv)
1845 && FindProcShort (glGetUniformdv);
1847 // load GL_ARB_shader_subroutine (added to OpenGL 4.0 core)
1848 const bool hasShaderSubroutine = (IsGlGreaterEqual (4, 0) || CheckExtension ("GL_ARB_shader_subroutine"))
1849 && FindProcShort (glGetSubroutineUniformLocation)
1850 && FindProcShort (glGetSubroutineIndex)
1851 && FindProcShort (glGetActiveSubroutineUniformiv)
1852 && FindProcShort (glGetActiveSubroutineUniformName)
1853 && FindProcShort (glGetActiveSubroutineName)
1854 && FindProcShort (glUniformSubroutinesuiv)
1855 && FindProcShort (glGetUniformSubroutineuiv)
1856 && FindProcShort (glGetProgramStageiv);
1858 // load GL_ARB_tessellation_shader (added to OpenGL 4.0 core)
1859 const bool hasTessellationShader = (IsGlGreaterEqual (4, 0) || CheckExtension ("GL_ARB_tessellation_shader"))
1860 && FindProcShort (glPatchParameteri)
1861 && FindProcShort (glPatchParameterfv);
1863 // load GL_ARB_transform_feedback2 (added to OpenGL 4.0 core)
1864 const bool hasTrsfFeedback2 = (IsGlGreaterEqual (4, 0) || CheckExtension ("GL_ARB_transform_feedback2"))
1865 && FindProcShort (glBindTransformFeedback)
1866 && FindProcShort (glDeleteTransformFeedbacks)
1867 && FindProcShort (glGenTransformFeedbacks)
1868 && FindProcShort (glIsTransformFeedback)
1869 && FindProcShort (glPauseTransformFeedback)
1870 && FindProcShort (glResumeTransformFeedback)
1871 && FindProcShort (glDrawTransformFeedback);
1873 // load GL_ARB_transform_feedback3 (added to OpenGL 4.0 core)
1874 const bool hasTrsfFeedback3 = (IsGlGreaterEqual (4, 0) || CheckExtension ("GL_ARB_transform_feedback3"))
1875 && FindProcShort (glDrawTransformFeedbackStream)
1876 && FindProcShort (glBeginQueryIndexed)
1877 && FindProcShort (glEndQueryIndexed)
1878 && FindProcShort (glGetQueryIndexediv);
1880 // load OpenGL 4.0 new functions
1881 has40 = IsGlGreaterEqual (4, 0)
1884 && hasShaderSubroutine
1885 && hasTessellationShader
1888 && FindProcShort (glMinSampleShading)
1889 && FindProcShort (glBlendEquationi)
1890 && FindProcShort (glBlendEquationSeparatei)
1891 && FindProcShort (glBlendFunci)
1892 && FindProcShort (glBlendFuncSeparatei);
1894 // load GL_ARB_ES2_compatibility (added to OpenGL 4.1 core)
1895 const bool hasES2Compatibility = (IsGlGreaterEqual (4, 1) || CheckExtension ("GL_ARB_ES2_compatibility"))
1896 && FindProcShort (glReleaseShaderCompiler)
1897 && FindProcShort (glShaderBinary)
1898 && FindProcShort (glGetShaderPrecisionFormat)
1899 && FindProcShort (glDepthRangef)
1900 && FindProcShort (glClearDepthf);
1902 // load GL_ARB_get_program_binary (added to OpenGL 4.1 core)
1903 const bool hasGetProgramBinary = (IsGlGreaterEqual (4, 1) || CheckExtension ("GL_ARB_get_program_binary"))
1904 && FindProcShort (glGetProgramBinary)
1905 && FindProcShort (glProgramBinary)
1906 && FindProcShort (glProgramParameteri);
1909 // load GL_ARB_separate_shader_objects (added to OpenGL 4.1 core)
1910 const bool hasSeparateShaderObjects = (IsGlGreaterEqual (4, 1) || CheckExtension ("GL_ARB_separate_shader_objects"))
1911 && FindProcShort (glUseProgramStages)
1912 && FindProcShort (glActiveShaderProgram)
1913 && FindProcShort (glCreateShaderProgramv)
1914 && FindProcShort (glBindProgramPipeline)
1915 && FindProcShort (glDeleteProgramPipelines)
1916 && FindProcShort (glGenProgramPipelines)
1917 && FindProcShort (glIsProgramPipeline)
1918 && FindProcShort (glGetProgramPipelineiv)
1919 && FindProcShort (glProgramUniform1i)
1920 && FindProcShort (glProgramUniform1iv)
1921 && FindProcShort (glProgramUniform1f)
1922 && FindProcShort (glProgramUniform1fv)
1923 && FindProcShort (glProgramUniform1d)
1924 && FindProcShort (glProgramUniform1dv)
1925 && FindProcShort (glProgramUniform1ui)
1926 && FindProcShort (glProgramUniform1uiv)
1927 && FindProcShort (glProgramUniform2i)
1928 && FindProcShort (glProgramUniform2iv)
1929 && FindProcShort (glProgramUniform2f)
1930 && FindProcShort (glProgramUniform2fv)
1931 && FindProcShort (glProgramUniform2d)
1932 && FindProcShort (glProgramUniform2dv)
1933 && FindProcShort (glProgramUniform2ui)
1934 && FindProcShort (glProgramUniform2uiv)
1935 && FindProcShort (glProgramUniform3i)
1936 && FindProcShort (glProgramUniform3iv)
1937 && FindProcShort (glProgramUniform3f)
1938 && FindProcShort (glProgramUniform3fv)
1939 && FindProcShort (glProgramUniform3d)
1940 && FindProcShort (glProgramUniform3dv)
1941 && FindProcShort (glProgramUniform3ui)
1942 && FindProcShort (glProgramUniform3uiv)
1943 && FindProcShort (glProgramUniform4i)
1944 && FindProcShort (glProgramUniform4iv)
1945 && FindProcShort (glProgramUniform4f)
1946 && FindProcShort (glProgramUniform4fv)
1947 && FindProcShort (glProgramUniform4d)
1948 && FindProcShort (glProgramUniform4dv)
1949 && FindProcShort (glProgramUniform4ui)
1950 && FindProcShort (glProgramUniform4uiv)
1951 && FindProcShort (glProgramUniformMatrix2fv)
1952 && FindProcShort (glProgramUniformMatrix3fv)
1953 && FindProcShort (glProgramUniformMatrix4fv)
1954 && FindProcShort (glProgramUniformMatrix2dv)
1955 && FindProcShort (glProgramUniformMatrix3dv)
1956 && FindProcShort (glProgramUniformMatrix4dv)
1957 && FindProcShort (glProgramUniformMatrix2x3fv)
1958 && FindProcShort (glProgramUniformMatrix3x2fv)
1959 && FindProcShort (glProgramUniformMatrix2x4fv)
1960 && FindProcShort (glProgramUniformMatrix4x2fv)
1961 && FindProcShort (glProgramUniformMatrix3x4fv)
1962 && FindProcShort (glProgramUniformMatrix4x3fv)
1963 && FindProcShort (glProgramUniformMatrix2x3dv)
1964 && FindProcShort (glProgramUniformMatrix3x2dv)
1965 && FindProcShort (glProgramUniformMatrix2x4dv)
1966 && FindProcShort (glProgramUniformMatrix4x2dv)
1967 && FindProcShort (glProgramUniformMatrix3x4dv)
1968 && FindProcShort (glProgramUniformMatrix4x3dv)
1969 && FindProcShort (glValidateProgramPipeline)
1970 && FindProcShort (glGetProgramPipelineInfoLog);
1972 // load GL_ARB_vertex_attrib_64bit (added to OpenGL 4.1 core)
1973 const bool hasVertAttrib64bit = (IsGlGreaterEqual (4, 1) || CheckExtension ("GL_ARB_vertex_attrib_64bit"))
1974 && FindProcShort (glVertexAttribL1d)
1975 && FindProcShort (glVertexAttribL2d)
1976 && FindProcShort (glVertexAttribL3d)
1977 && FindProcShort (glVertexAttribL4d)
1978 && FindProcShort (glVertexAttribL1dv)
1979 && FindProcShort (glVertexAttribL2dv)
1980 && FindProcShort (glVertexAttribL3dv)
1981 && FindProcShort (glVertexAttribL4dv)
1982 && FindProcShort (glVertexAttribLPointer)
1983 && FindProcShort (glGetVertexAttribLdv);
1985 // load GL_ARB_viewport_array (added to OpenGL 4.1 core)
1986 const bool hasViewportArray = (IsGlGreaterEqual (4, 1) || CheckExtension ("GL_ARB_viewport_array"))
1987 && FindProcShort (glViewportArrayv)
1988 && FindProcShort (glViewportIndexedf)
1989 && FindProcShort (glViewportIndexedfv)
1990 && FindProcShort (glScissorArrayv)
1991 && FindProcShort (glScissorIndexed)
1992 && FindProcShort (glScissorIndexedv)
1993 && FindProcShort (glDepthRangeArrayv)
1994 && FindProcShort (glDepthRangeIndexed)
1995 && FindProcShort (glGetFloati_v)
1996 && FindProcShort (glGetDoublei_v);
1998 has41 = IsGlGreaterEqual (4, 1)
1999 && hasES2Compatibility
2000 && hasGetProgramBinary
2001 && hasSeparateShaderObjects
2002 && hasVertAttrib64bit
2003 && hasViewportArray;
2005 // load GL_ARB_base_instance (added to OpenGL 4.2 core)
2006 const bool hasBaseInstance = (IsGlGreaterEqual (4, 2) || CheckExtension ("GL_ARB_base_instance"))
2007 && FindProcShort (glDrawArraysInstancedBaseInstance)
2008 && FindProcShort (glDrawElementsInstancedBaseInstance)
2009 && FindProcShort (glDrawElementsInstancedBaseVertexBaseInstance);
2011 // load GL_ARB_transform_feedback_instanced (added to OpenGL 4.2 core)
2012 const bool hasTrsfFeedbackInstanced = (IsGlGreaterEqual (4, 2) || CheckExtension ("GL_ARB_transform_feedback_instanced"))
2013 && FindProcShort (glDrawTransformFeedbackInstanced)
2014 && FindProcShort (glDrawTransformFeedbackStreamInstanced);
2016 // load GL_ARB_internalformat_query (added to OpenGL 4.2 core)
2017 const bool hasInternalFormatQuery = (IsGlGreaterEqual (4, 2) || CheckExtension ("GL_ARB_internalformat_query"))
2018 && FindProcShort (glGetInternalformativ);
2020 // load GL_ARB_shader_atomic_counters (added to OpenGL 4.2 core)
2021 const bool hasShaderAtomicCounters = (IsGlGreaterEqual (4, 2) || CheckExtension ("GL_ARB_shader_atomic_counters"))
2022 && FindProcShort (glGetActiveAtomicCounterBufferiv);
2024 // load GL_ARB_shader_image_load_store (added to OpenGL 4.2 core)
2025 const bool hasShaderImgLoadStore = (IsGlGreaterEqual (4, 2) || CheckExtension ("GL_ARB_shader_image_load_store"))
2026 && FindProcShort (glBindImageTexture)
2027 && FindProcShort (glMemoryBarrier);
2029 // load GL_ARB_texture_storage (added to OpenGL 4.2 core)
2030 const bool hasTextureStorage = (IsGlGreaterEqual (4, 2) || CheckExtension ("GL_ARB_texture_storage"))
2031 && FindProcShort (glTexStorage1D)
2032 && FindProcShort (glTexStorage2D)
2033 && FindProcShort (glTexStorage3D);
2035 has42 = IsGlGreaterEqual (4, 2)
2037 && hasTrsfFeedbackInstanced
2038 && hasInternalFormatQuery
2039 && hasShaderAtomicCounters
2040 && hasShaderImgLoadStore
2041 && hasTextureStorage;
2043 has43 = IsGlGreaterEqual (4, 3)
2044 && FindProcShort (glClearBufferData)
2045 && FindProcShort (glClearBufferSubData)
2046 && FindProcShort (glDispatchCompute)
2047 && FindProcShort (glDispatchComputeIndirect)
2048 && FindProcShort (glCopyImageSubData)
2049 && FindProcShort (glFramebufferParameteri)
2050 && FindProcShort (glGetFramebufferParameteriv)
2051 && FindProcShort (glGetInternalformati64v)
2052 && FindProcShort (glInvalidateTexSubImage)
2053 && FindProcShort (glInvalidateTexImage)
2054 && FindProcShort (glInvalidateBufferSubData)
2055 && FindProcShort (glInvalidateBufferData)
2056 && FindProcShort (glInvalidateFramebuffer)
2057 && FindProcShort (glInvalidateSubFramebuffer)
2058 && FindProcShort (glMultiDrawArraysIndirect)
2059 && FindProcShort (glMultiDrawElementsIndirect)
2060 && FindProcShort (glGetProgramInterfaceiv)
2061 && FindProcShort (glGetProgramResourceIndex)
2062 && FindProcShort (glGetProgramResourceName)
2063 && FindProcShort (glGetProgramResourceiv)
2064 && FindProcShort (glGetProgramResourceLocation)
2065 && FindProcShort (glGetProgramResourceLocationIndex)
2066 && FindProcShort (glShaderStorageBlockBinding)
2067 && FindProcShort (glTexBufferRange)
2068 && FindProcShort (glTexStorage2DMultisample)
2069 && FindProcShort (glTexStorage3DMultisample)
2070 && FindProcShort (glTextureView)
2071 && FindProcShort (glBindVertexBuffer)
2072 && FindProcShort (glVertexAttribFormat)
2073 && FindProcShort (glVertexAttribIFormat)
2074 && FindProcShort (glVertexAttribLFormat)
2075 && FindProcShort (glVertexAttribBinding)
2076 && FindProcShort (glVertexBindingDivisor)
2077 && FindProcShort (glDebugMessageControl)
2078 && FindProcShort (glDebugMessageInsert)
2079 && FindProcShort (glDebugMessageCallback)
2080 && FindProcShort (glGetDebugMessageLog)
2081 && FindProcShort (glPushDebugGroup)
2082 && FindProcShort (glPopDebugGroup)
2083 && FindProcShort (glObjectLabel)
2084 && FindProcShort (glGetObjectLabel)
2085 && FindProcShort (glObjectPtrLabel)
2086 && FindProcShort (glGetObjectPtrLabel);
2088 // load GL_ARB_clear_texture (added to OpenGL 4.4 core)
2089 bool arbTexClear = (IsGlGreaterEqual (4, 4) || CheckExtension ("GL_ARB_clear_texture"))
2090 && FindProcShort (glClearTexImage)
2091 && FindProcShort (glClearTexSubImage);
2093 has44 = IsGlGreaterEqual (4, 4)
2095 && FindProcShort (glBufferStorage)
2096 && FindProcShort (glBindBuffersBase)
2097 && FindProcShort (glBindBuffersRange)
2098 && FindProcShort (glBindTextures)
2099 && FindProcShort (glBindSamplers)
2100 && FindProcShort (glBindImageTextures)
2101 && FindProcShort (glBindVertexBuffers);
2103 // initialize debug context extension
2104 if (CheckExtension ("GL_ARB_debug_output"))
2109 arbDbg = (OpenGl_ArbDbg* )(&(*myFuncs));
2111 else if (FindProc ("glDebugMessageControlARB", myFuncs->glDebugMessageControl)
2112 && FindProc ("glDebugMessageInsertARB", myFuncs->glDebugMessageInsert)
2113 && FindProc ("glDebugMessageCallbackARB", myFuncs->glDebugMessageCallback)
2114 && FindProc ("glGetDebugMessageLogARB", myFuncs->glGetDebugMessageLog))
2116 arbDbg = (OpenGl_ArbDbg* )(&(*myFuncs));
2120 && caps->contextDebug)
2122 // setup default callback
2123 myIsGlDebugCtx = Standard_True;
2124 arbDbg->glDebugMessageCallback (debugCallbackWrap, this);
2127 ::glEnable (GL_DEBUG_OUTPUT);
2129 if (caps->contextSyncDebug)
2131 ::glEnable (GL_DEBUG_OUTPUT_SYNCHRONOUS);
2136 // initialize TBO extension (ARB)
2138 && CheckExtension ("GL_ARB_texture_buffer_object")
2139 && FindProc ("glTexBufferARB", myFuncs->glTexBuffer))
2141 arbTBO = (OpenGl_ArbTBO* )(&(*myFuncs));
2143 arbTboRGB32 = CheckExtension ("GL_ARB_texture_buffer_object_rgb32");
2145 // initialize hardware instancing extension (ARB)
2147 && CheckExtension ("GL_ARB_draw_instanced")
2148 && FindProc ("glDrawArraysInstancedARB", myFuncs->glDrawArraysInstanced)
2149 && FindProc ("glDrawElementsInstancedARB", myFuncs->glDrawElementsInstanced))
2151 arbIns = (OpenGl_ArbIns* )(&(*myFuncs));
2154 // initialize FBO extension (ARB)
2157 arbFBO = (OpenGl_ArbFBO* )(&(*myFuncs));
2158 arbFBOBlit = (OpenGl_ArbFBOBlit* )(&(*myFuncs));
2159 extPDS = Standard_True; // extension for EXT, but part of ARB
2162 // initialize GS extension (EXT)
2163 if (CheckExtension ("GL_EXT_geometry_shader4")
2164 && FindProcShort (glProgramParameteriEXT))
2166 extGS = (OpenGl_ExtGS* )(&(*myFuncs));
2169 // initialize bindless texture extension (ARB)
2170 if (CheckExtension ("GL_ARB_bindless_texture")
2171 && FindProcShort (glGetTextureHandleARB)
2172 && FindProcShort (glGetTextureSamplerHandleARB)
2173 && FindProcShort (glMakeTextureHandleResidentARB)
2174 && FindProcShort (glMakeTextureHandleNonResidentARB)
2175 && FindProcShort (glGetImageHandleARB)
2176 && FindProcShort (glMakeImageHandleResidentARB)
2177 && FindProcShort (glMakeImageHandleNonResidentARB)
2178 && FindProcShort (glUniformHandleui64ARB)
2179 && FindProcShort (glUniformHandleui64vARB)
2180 && FindProcShort (glProgramUniformHandleui64ARB)
2181 && FindProcShort (glProgramUniformHandleui64vARB)
2182 && FindProcShort (glIsTextureHandleResidentARB)
2183 && FindProcShort (glIsImageHandleResidentARB)
2184 && FindProcShort (glVertexAttribL1ui64ARB)
2185 && FindProcShort (glVertexAttribL1ui64vARB)
2186 && FindProcShort (glGetVertexAttribLui64vARB))
2188 arbTexBindless = (OpenGl_ArbTexBindless* )(&(*myFuncs));
2193 checkWrongVersion (1, 2);
2200 checkWrongVersion (1, 3);
2207 checkWrongVersion (1, 4);
2214 checkWrongVersion (1, 5);
2221 core15 = (OpenGl_GlCore15* )(&(*myFuncs));
2223 core15fwd = (OpenGl_GlCore15Fwd* )(&(*myFuncs));
2227 checkWrongVersion (2, 0);
2233 const char* aGlslVer = (const char* )::glGetString (GL_SHADING_LANGUAGE_VERSION);
2234 if (aGlslVer == NULL
2235 || *aGlslVer == '\0')
2237 // broken context has been detected
2238 TCollection_ExtendedString aMsg = TCollection_ExtendedString()
2239 + "Error! OpenGL context reports version "
2240 + myGlVerMajor + "." + myGlVerMinor
2241 + " but reports wrong GLSL version";
2242 PushMessage (GL_DEBUG_SOURCE_APPLICATION,
2243 GL_DEBUG_TYPE_ERROR,
2245 GL_DEBUG_SEVERITY_HIGH,
2254 core20 = (OpenGl_GlCore20* )(&(*myFuncs));
2256 core20fwd = (OpenGl_GlCore20Fwd* )(&(*myFuncs));
2260 checkWrongVersion (2, 1);
2268 checkWrongVersion (3, 0);
2274 // MSAA RenderBuffers have been defined in OpenGL 3.0,
2275 // but MSAA Textures - only in OpenGL 3.2+
2277 && CheckExtension ("GL_ARB_texture_multisample")
2278 && FindProcShort (glTexImage2DMultisample))
2280 GLint aNbColorSamples = 0, aNbDepthSamples = 0;
2281 ::glGetIntegerv (GL_MAX_COLOR_TEXTURE_SAMPLES, &aNbColorSamples);
2282 ::glGetIntegerv (GL_MAX_DEPTH_TEXTURE_SAMPLES, &aNbDepthSamples);
2283 myMaxMsaaSamples = Min (aNbColorSamples, aNbDepthSamples);
2286 && CheckExtension ("GL_ARB_texture_storage_multisample")
2287 && FindProcShort (glTexStorage2DMultisample))
2294 checkWrongVersion (3, 1);
2299 arbTBO = (OpenGl_ArbTBO* )(&(*myFuncs));
2300 arbIns = (OpenGl_ArbIns* )(&(*myFuncs));
2304 checkWrongVersion (3, 2);
2309 core32 = (OpenGl_GlCore32* )(&(*myFuncs));
2312 core32->glGenVertexArrays (1, &myDefaultVao);
2316 core32back = (OpenGl_GlCore32Back* )(&(*myFuncs));
2318 ::glGetIntegerv (GL_MAX_SAMPLES, &myMaxMsaaSamples);
2322 checkWrongVersion (3, 3);
2327 core33 = (OpenGl_GlCore33* )(&(*myFuncs));
2330 core33back = (OpenGl_GlCore33Back* )(&(*myFuncs));
2333 // initialize sampler object
2334 myTexSampler = new OpenGl_Sampler();
2335 myTexSampler->Init (*this);
2339 checkWrongVersion (4, 0);
2344 arbTboRGB32 = Standard_True; // in core since OpenGL 4.0
2348 checkWrongVersion (4, 1);
2353 core41 = (OpenGl_GlCore41* )(&(*myFuncs));
2356 core41back = (OpenGl_GlCore41Back* )(&(*myFuncs));
2361 checkWrongVersion (4, 2);
2366 core42 = (OpenGl_GlCore42* )(&(*myFuncs));
2369 core42back = (OpenGl_GlCore42Back* )(&(*myFuncs));
2374 checkWrongVersion (4, 3);
2379 core43 = (OpenGl_GlCore43* )(&(*myFuncs));
2382 core43back = (OpenGl_GlCore43Back* )(&(*myFuncs));
2387 checkWrongVersion (4, 4);
2392 core44 = (OpenGl_GlCore44* )(&(*myFuncs));
2395 core44back = (OpenGl_GlCore44Back* )(&(*myFuncs));
2400 // =======================================================================
2401 // function : MemoryInfo
2403 // =======================================================================
2404 Standard_Size OpenGl_Context::AvailableMemory() const
2406 #if !defined(GL_ES_VERSION_2_0)
2409 // this is actually information for VBO pool
2410 // however because pools are mostly shared
2411 // it can be used for total GPU memory estimations
2414 glGetIntegerv (GL_VBO_FREE_MEMORY_ATI, aMemInfo);
2415 // returned value is in KiB, however this maybe changed in future
2416 return Standard_Size(aMemInfo[0]) * 1024;
2420 // current available dedicated video memory (in KiB), currently unused GPU memory
2422 glGetIntegerv (GL_GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX, &aMemInfo);
2423 return Standard_Size(aMemInfo) * 1024;
2429 // =======================================================================
2430 // function : MemoryInfo
2432 // =======================================================================
2433 TCollection_AsciiString OpenGl_Context::MemoryInfo() const
2435 TColStd_IndexedDataMapOfStringString aDict;
2438 TCollection_AsciiString aText;
2439 for (TColStd_IndexedDataMapOfStringString::Iterator anIter (aDict); anIter.More(); anIter.Next())
2441 if (!aText.IsEmpty())
2445 aText += TCollection_AsciiString(" ") + anIter.Key() + ": " + anIter.Value();
2450 // =======================================================================
2451 // function : MemoryInfo
2453 // =======================================================================
2454 void OpenGl_Context::MemoryInfo (TColStd_IndexedDataMapOfStringString& theDict) const
2456 #if defined(GL_ES_VERSION_2_0)
2458 #elif defined(__APPLE__) && !defined(MACOSX_USE_GLX)
2459 GLint aGlRendId = 0;
2460 CGLGetParameter (CGLGetCurrentContext(), kCGLCPCurrentRendererID, &aGlRendId);
2462 CGLRendererInfoObj aRendObj = NULL;
2463 CGOpenGLDisplayMask aDispMask = CGDisplayIDToOpenGLDisplayMask (kCGDirectMainDisplay);
2465 CGLQueryRendererInfo (aDispMask, &aRendObj, &aRendNb);
2466 for (GLint aRendIter = 0; aRendIter < aRendNb; ++aRendIter)
2469 if (CGLDescribeRenderer (aRendObj, aRendIter, kCGLRPRendererID, &aRendId) != kCGLNoError
2470 || aRendId != aGlRendId)
2475 //kCGLRPVideoMemoryMegabytes = 131;
2476 //kCGLRPTextureMemoryMegabytes = 132;
2478 #if MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
2479 if (CGLDescribeRenderer(aRendObj, aRendIter, kCGLRPVideoMemoryMegabytes, &aVMem) == kCGLNoError)
2481 addInfo (theDict, "GPU memory", TCollection_AsciiString() + aVMem + " MiB");
2483 if (CGLDescribeRenderer(aRendObj, aRendIter, kCGLRPTextureMemoryMegabytes, &aVMem) == kCGLNoError)
2485 addInfo (theDict, "GPU Texture memory", TCollection_AsciiString() + aVMem + " MiB");
2488 if (CGLDescribeRenderer(aRendObj, aRendIter, kCGLRPVideoMemory, &aVMem) == kCGLNoError)
2490 addInfo (theDict, "GPU memory", TCollection_AsciiString() + (aVMem / (1024 * 1024)) + " MiB");
2492 if (CGLDescribeRenderer(aRendObj, aRendIter, kCGLRPTextureMemory, &aVMem) == kCGLNoError)
2494 addInfo (theDict, "GPU Texture memory", TCollection_AsciiString() + (aVMem / (1024 * 1024)) + " MiB");
2500 #if !defined(GL_ES_VERSION_2_0)
2504 memset (aValues, 0, sizeof(aValues));
2505 glGetIntegerv (GL_VBO_FREE_MEMORY_ATI, aValues);
2507 // total memory free in the pool
2508 addInfo (theDict, "GPU free memory", TCollection_AsciiString() + (aValues[0] / 1024) + " MiB");
2510 if (aValues[1] != aValues[0])
2512 // largest available free block in the pool
2513 addInfo (theDict, "Largest free block", TCollection_AsciiString() + (aValues[1] / 1024) + " MiB");
2515 if (aValues[2] != aValues[0])
2517 // total auxiliary memory free
2518 addInfo (theDict, "Free auxiliary memory", TCollection_AsciiString() + (aValues[2] / 1024) + " MiB");
2523 //current available dedicated video memory (in KiB), currently unused GPU memory
2525 glGetIntegerv (GL_GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX, &aValue);
2526 addInfo (theDict, "GPU free memory", TCollection_AsciiString() + (aValue / 1024) + " MiB");
2528 // dedicated video memory, total size (in KiB) of the GPU memory
2529 GLint aDedicated = 0;
2530 glGetIntegerv (GL_GPU_MEMORY_INFO_DEDICATED_VIDMEM_NVX, &aDedicated);
2531 addInfo (theDict, "GPU memory", TCollection_AsciiString() + (aDedicated / 1024) + " MiB");
2533 // total available memory, total size (in KiB) of the memory available for allocations
2534 glGetIntegerv (GL_GPU_MEMORY_INFO_TOTAL_AVAILABLE_MEMORY_NVX, &aValue);
2535 if (aValue != aDedicated)
2537 // different only for special configurations
2538 addInfo (theDict, "Total memory", TCollection_AsciiString() + (aValue / 1024) + " MiB");
2543 #if !defined(GL_ES_VERSION_2_0) && !defined(__APPLE__) && !defined(_WIN32)
2544 // GLX_RENDERER_VENDOR_ID_MESA
2545 if (myFuncs->glXQueryCurrentRendererIntegerMESA != NULL)
2547 unsigned int aVMemMiB = 0;
2548 if (myFuncs->glXQueryCurrentRendererIntegerMESA (GLX_RENDERER_VIDEO_MEMORY_MESA, &aVMemMiB) != False)
2550 addInfo (theDict, "GPU memory", TCollection_AsciiString() + int(aVMemMiB) + " MiB");
2556 // =======================================================================
2557 // function : DiagnosticInfo
2559 // =======================================================================
2560 void OpenGl_Context::DiagnosticInformation (TColStd_IndexedDataMapOfStringString& theDict,
2561 Graphic3d_DiagnosticInfo theFlags) const
2563 if ((theFlags & Graphic3d_DiagnosticInfo_NativePlatform) != 0)
2565 #if defined(HAVE_EGL)
2566 addInfo (theDict, "EGLVersion", ::eglQueryString ((Aspect_Display)myDisplay, EGL_VERSION));
2567 addInfo (theDict, "EGLVendor", ::eglQueryString ((Aspect_Display)myDisplay, EGL_VENDOR));
2568 addInfo (theDict, "EGLClientAPIs", ::eglQueryString ((Aspect_Display)myDisplay, EGL_CLIENT_APIS));
2569 if ((theFlags & Graphic3d_DiagnosticInfo_Extensions) != 0)
2571 addInfo (theDict, "EGLExtensions", ::eglQueryString ((Aspect_Display)myDisplay, EGL_EXTENSIONS));
2573 #elif defined(_WIN32)
2574 if ((theFlags & Graphic3d_DiagnosticInfo_Extensions) != 0
2575 && myFuncs->wglGetExtensionsStringARB != NULL)
2577 const char* aWglExts = myFuncs->wglGetExtensionsStringARB ((HDC )myWindowDC);
2578 addInfo (theDict, "WGLExtensions", aWglExts);
2580 #elif defined(__APPLE__)
2583 Display* aDisplay = (Display*)myDisplay;
2584 const int aScreen = DefaultScreen(aDisplay);
2585 addInfo (theDict, "GLXDirectRendering", ::glXIsDirect (aDisplay, (GLXContext )myGContext) ? "Yes" : "No");
2586 addInfo (theDict, "GLXVendor", ::glXQueryServerString (aDisplay, aScreen, GLX_VENDOR));
2587 addInfo (theDict, "GLXVersion", ::glXQueryServerString (aDisplay, aScreen, GLX_VERSION));
2588 if ((theFlags & Graphic3d_DiagnosticInfo_Extensions) != 0)
2590 const char* aGlxExts = ::glXQueryExtensionsString (aDisplay, aScreen);
2591 addInfo(theDict, "GLXExtensions", aGlxExts);
2594 addInfo (theDict, "GLXClientVendor", ::glXGetClientString (aDisplay, GLX_VENDOR));
2595 addInfo (theDict, "GLXClientVersion", ::glXGetClientString (aDisplay, GLX_VERSION));
2596 if ((theFlags & Graphic3d_DiagnosticInfo_Extensions) != 0)
2598 addInfo (theDict, "GLXClientExtensions", ::glXGetClientString (aDisplay, GLX_EXTENSIONS));
2603 if ((theFlags & Graphic3d_DiagnosticInfo_Device) != 0)
2605 addInfo (theDict, "GLvendor", (const char*)::glGetString (GL_VENDOR));
2606 addInfo (theDict, "GLdevice", (const char*)::glGetString (GL_RENDERER));
2607 addInfo (theDict, "GLversion", (const char*)::glGetString (GL_VERSION));
2608 addInfo (theDict, "GLSLversion", (const char*)::glGetString (GL_SHADING_LANGUAGE_VERSION));
2611 addInfo (theDict, "GLdebug", "ON");
2615 if ((theFlags & Graphic3d_DiagnosticInfo_Limits) != 0)
2617 addInfo (theDict, "Max texture size", TCollection_AsciiString(myMaxTexDim));
2618 addInfo (theDict, "Max MSAA samples", TCollection_AsciiString(myMaxMsaaSamples));
2621 if ((theFlags & Graphic3d_DiagnosticInfo_FrameBuffer) != 0)
2623 GLint aViewport[4] = {};
2624 ::glGetIntegerv (GL_VIEWPORT, aViewport);
2625 addInfo (theDict, "Viewport", TCollection_AsciiString() + aViewport[2] + "x" + aViewport[3]);
2628 if ((theFlags & Graphic3d_DiagnosticInfo_Memory) != 0)
2630 MemoryInfo (theDict);
2633 if ((theFlags & Graphic3d_DiagnosticInfo_Extensions) != 0)
2635 #if !defined(GL_ES_VERSION_2_0)
2636 if (IsGlGreaterEqual (3, 0)
2637 && myFuncs->glGetStringi != NULL)
2639 TCollection_AsciiString anExtList;
2641 ::glGetIntegerv (GL_NUM_EXTENSIONS, &anExtNb);
2642 for (GLint anIter = 0; anIter < anExtNb; ++anIter)
2644 const char* anExtension = (const char*)myFuncs->glGetStringi (GL_EXTENSIONS, (GLuint)anIter);
2645 if (!anExtList.IsEmpty())
2649 anExtList += anExtension;
2651 addInfo(theDict, "GLextensions", anExtList);
2656 addInfo (theDict, "GLextensions", (const char*)::glGetString (GL_EXTENSIONS));
2661 // =======================================================================
2662 // function : GetResource
2664 // =======================================================================
2665 const Handle(OpenGl_Resource)& OpenGl_Context::GetResource (const TCollection_AsciiString& theKey) const
2667 return mySharedResources->IsBound (theKey) ? mySharedResources->Find (theKey) : NULL_GL_RESOURCE;
2670 // =======================================================================
2671 // function : ShareResource
2673 // =======================================================================
2674 Standard_Boolean OpenGl_Context::ShareResource (const TCollection_AsciiString& theKey,
2675 const Handle(OpenGl_Resource)& theResource)
2677 if (theKey.IsEmpty() || theResource.IsNull())
2679 return Standard_False;
2681 return mySharedResources->Bind (theKey, theResource);
2684 // =======================================================================
2685 // function : ReleaseResource
2687 // =======================================================================
2688 void OpenGl_Context::ReleaseResource (const TCollection_AsciiString& theKey,
2689 const Standard_Boolean theToDelay)
2691 if (!mySharedResources->IsBound (theKey))
2695 auto& aRes = mySharedResources->Find (theKey);
2696 if (aRes->GetRefCount() > 1)
2703 myDelayed->Bind (theKey, 1);
2707 aRes->Release (this);
2708 mySharedResources->UnBind (theKey);
2712 // =======================================================================
2713 // function : ReleaseDelayed
2715 // =======================================================================
2716 void OpenGl_Context::ReleaseDelayed()
2718 // release queued elements
2719 while (!myUnusedResources->IsEmpty())
2721 myUnusedResources->First()->Release (this);
2722 myUnusedResources->RemoveFirst();
2725 // release delayed shared resources
2726 NCollection_Vector<TCollection_AsciiString> aDeadList;
2727 for (NCollection_DataMap<TCollection_AsciiString, Standard_Integer>::Iterator anIter (*myDelayed);
2728 anIter.More(); anIter.Next())
2730 if (++anIter.ChangeValue() <= 2)
2732 continue; // postpone release one more frame to ensure noone use it periodically
2735 const TCollection_AsciiString& aKey = anIter.Key();
2736 if (!mySharedResources->IsBound (aKey))
2738 // mixed unshared strategy delayed/undelayed was used!
2739 aDeadList.Append (aKey);
2743 auto& aRes = mySharedResources->ChangeFind (aKey);
2744 if (aRes->GetRefCount() > 1)
2746 // should be only 1 instance in mySharedResources
2747 // if not - resource was reused again
2748 aDeadList.Append (aKey);
2752 // release resource if no one requiested it more than 2 redraw calls
2753 aRes->Release (this);
2754 mySharedResources->UnBind (aKey);
2755 aDeadList.Append (aKey);
2758 for (Standard_Integer anIter = 0; anIter < aDeadList.Length(); ++anIter)
2760 myDelayed->UnBind (aDeadList.Value (anIter));
2764 // =======================================================================
2765 // function : BindProgram
2767 // =======================================================================
2768 Standard_Boolean OpenGl_Context::BindProgram (const Handle(OpenGl_ShaderProgram)& theProgram)
2770 if (core20fwd == NULL)
2772 return Standard_False;
2775 if (theProgram.IsNull()
2776 || !theProgram->IsValid())
2778 if (!myActiveProgram.IsNull())
2780 core20fwd->glUseProgram (OpenGl_ShaderProgram::NO_PROGRAM);
2781 myActiveProgram.Nullify();
2783 return Standard_False;
2786 myActiveProgram = theProgram;
2787 core20fwd->glUseProgram (theProgram->ProgramId());
2788 return Standard_True;
2791 // =======================================================================
2792 // function : BindDefaultVao
2794 // =======================================================================
2795 void OpenGl_Context::BindDefaultVao()
2797 #if !defined(GL_ES_VERSION_2_0)
2798 if (myDefaultVao == 0
2804 core32->glBindVertexArray (myDefaultVao);
2808 // =======================================================================
2809 // function : SetDefaultFrameBuffer
2811 // =======================================================================
2812 Handle(OpenGl_FrameBuffer) OpenGl_Context::SetDefaultFrameBuffer (const Handle(OpenGl_FrameBuffer)& theFbo)
2814 Handle(OpenGl_FrameBuffer) aFbo = myDefaultFbo;
2815 myDefaultFbo = theFbo;
2819 // =======================================================================
2820 // function : SetShadingMaterial
2822 // =======================================================================
2823 void OpenGl_Context::SetShadingMaterial (const OpenGl_AspectFace* theAspect,
2824 const OpenGl_Vec4* theHighlightColor)
2826 if (!myActiveProgram.IsNull())
2828 myActiveProgram->SetUniform (this,
2829 myActiveProgram->GetStateLocation (OpenGl_OCCT_TEXTURE_ENABLE),
2830 theAspect->Aspect()->ToMapTexture() ? 1 : 0);
2831 myActiveProgram->SetUniform (this,
2832 myActiveProgram->GetStateLocation (OpenGl_OCCT_DISTINGUISH_MODE),
2833 theAspect->Aspect()->Distinguish() ? 1 : 0);
2835 OpenGl_Material aParams;
2836 for (Standard_Integer anIndex = 0; anIndex < 2; ++anIndex)
2838 const GLint aLoc = myActiveProgram->GetStateLocation (anIndex == 0
2839 ? OpenGl_OCCT_FRONT_MATERIAL
2840 : OpenGl_OCCT_BACK_MATERIAL);
2841 if (aLoc == OpenGl_ShaderProgram::INVALID_LOCATION)
2846 if (anIndex == 0 || !theAspect->Aspect()->Distinguish())
2848 const Graphic3d_MaterialAspect& aSrcMat = theAspect->Aspect()->FrontMaterial();
2849 const Quantity_Color& aSrcIntColor = theAspect->Aspect()->InteriorColor();
2850 aParams.Init (aSrcMat, aSrcIntColor);
2851 aParams.Diffuse.a() = 1.0f - (float )aSrcMat.Transparency();
2855 const Graphic3d_MaterialAspect& aSrcMat = theAspect->Aspect()->BackMaterial();
2856 const Quantity_Color& aSrcIntColor = theAspect->Aspect()->BackInteriorColor();
2857 aParams.Init (aSrcMat, aSrcIntColor);
2858 aParams.Diffuse.a() = 1.0f - (float )aSrcMat.Transparency();
2860 if (theHighlightColor != NULL)
2862 aParams.SetColor (*theHighlightColor);
2865 myActiveProgram->SetUniform (this, aLoc, OpenGl_Material::NbOfVec4(),
2871 // =======================================================================
2872 // function : SetColor4fv
2874 // =======================================================================
2875 void OpenGl_Context::SetColor4fv (const OpenGl_Vec4& theColor)
2877 if (!myActiveProgram.IsNull())
2879 myActiveProgram->SetUniform (this, myActiveProgram->GetStateLocation (OpenGl_OCCT_COLOR), theColor);
2881 #if !defined(GL_ES_VERSION_2_0)
2882 else if (core11 != NULL)
2884 core11->glColor4fv (theColor.GetData());
2889 // =======================================================================
2890 // function : SetTypeOfLine
2892 // =======================================================================
2893 void OpenGl_Context::SetTypeOfLine (const Aspect_TypeOfLine theType,
2894 const Standard_ShortReal theFactor)
2896 Standard_Integer aPattern = 0xFFFF;
2899 case Aspect_TOL_DASH:
2904 case Aspect_TOL_DOT:
2909 case Aspect_TOL_DOTDASH:
2914 case Aspect_TOL_SOLID:
2919 case Aspect_TOL_USERDEFINED:
2926 if (!myActiveProgram.IsNull())
2928 myActiveProgram->SetUniform (this, "uPattern", aPattern);
2929 myActiveProgram->SetUniform (this, "uFactor", theFactor);
2933 #if !defined(GL_ES_VERSION_2_0)
2934 if (theType != Aspect_TOL_SOLID)
2939 gl2psEnable (GL2PS_LINE_STIPPLE);
2945 core11fwd->glEnable (GL_LINE_STIPPLE);
2947 core11->glLineStipple (static_cast<GLint> (theFactor),
2948 static_cast<GLushort> (aPattern));
2955 core11fwd->glDisable (GL_LINE_STIPPLE);
2961 gl2psDisable (GL2PS_LINE_STIPPLE);
2968 // =======================================================================
2969 // function : SetLineWidth
2971 // =======================================================================
2972 void OpenGl_Context::SetLineWidth (const Standard_ShortReal theWidth)
2976 // glLineWidth() is still defined within Core Profile, but has no effect with values != 1.0f
2977 core11fwd->glLineWidth (theWidth * myResolutionRatio);
2982 gl2psLineWidth (theWidth);
2987 // =======================================================================
2988 // function : SetTextureMatrix
2990 // =======================================================================
2991 void OpenGl_Context::SetTextureMatrix (const Handle(Graphic3d_TextureParams)& theParams)
2993 if (theParams.IsNull())
2997 else if (!myActiveProgram.IsNull())
2999 const GLint aUniLoc = myActiveProgram->GetStateLocation (OpenGl_OCCT_TEXTURE_TRSF2D);
3000 if (aUniLoc == OpenGl_ShaderProgram::INVALID_LOCATION)
3005 // pack transformation parameters
3006 OpenGl_Vec4 aTrsf[2];
3007 aTrsf[0].xy() = theParams->Translation();
3008 aTrsf[0].zw() = theParams->Scale();
3009 aTrsf[1].x() = std::sin (-theParams->Rotation() * static_cast<float> (M_PI / 180.0));
3010 aTrsf[1].y() = std::cos (-theParams->Rotation() * static_cast<float> (M_PI / 180.0));
3011 myActiveProgram->SetUniform (this, aUniLoc, 2, aTrsf);
3015 #if !defined(GL_ES_VERSION_2_0)
3018 GLint aMatrixMode = GL_TEXTURE;
3019 ::glGetIntegerv (GL_MATRIX_MODE, &aMatrixMode);
3021 core11->glMatrixMode (GL_TEXTURE);
3022 OpenGl_Mat4 aTextureMat;
3023 const Graphic3d_Vec2& aScale = theParams->Scale();
3024 const Graphic3d_Vec2& aTrans = theParams->Translation();
3025 Graphic3d_TransformUtils::Scale (aTextureMat, aScale.x(), aScale.y(), 1.0f);
3026 Graphic3d_TransformUtils::Translate (aTextureMat, -aTrans.x(), -aTrans.y(), 0.0f);
3027 Graphic3d_TransformUtils::Rotate (aTextureMat, -theParams->Rotation(), 0.0f, 0.0f, 1.0f);
3028 core11->glLoadMatrixf (aTextureMat);
3029 core11->glMatrixMode (aMatrixMode);
3034 // =======================================================================
3035 // function : SetPointSize
3037 // =======================================================================
3038 void OpenGl_Context::SetPointSize (const Standard_ShortReal theSize)
3040 if (!myActiveProgram.IsNull())
3042 myActiveProgram->SetUniform (this, myActiveProgram->GetStateLocation (OpenGl_OCCT_POINT_SIZE), theSize);
3043 #if !defined(GL_ES_VERSION_2_0)
3044 //myContext->core11fwd->glEnable (GL_VERTEX_PROGRAM_POINT_SIZE);
3047 #if !defined(GL_ES_VERSION_2_0)
3050 core11fwd->glPointSize (theSize);
3051 if (core20fwd != NULL)
3053 //myContext->core11fwd->glDisable (GL_VERTEX_PROGRAM_POINT_SIZE);
3059 // =======================================================================
3060 // function : SetPointSpriteOrigin
3062 // =======================================================================
3063 void OpenGl_Context::SetPointSpriteOrigin()
3065 #if !defined(GL_ES_VERSION_2_0)
3066 if (core15fwd == NULL)
3071 const int aNewState = !myActiveProgram.IsNull() ? GL_UPPER_LEFT : GL_LOWER_LEFT;
3072 if (myPointSpriteOrig != aNewState)
3074 myPointSpriteOrig = aNewState;
3075 core15fwd->glPointParameteri (GL_POINT_SPRITE_COORD_ORIGIN, aNewState);
3080 // =======================================================================
3081 // function : SetGlNormalizeEnabled
3083 // =======================================================================
3084 Standard_Boolean OpenGl_Context::SetGlNormalizeEnabled (Standard_Boolean isEnabled)
3086 if (isEnabled == myIsGlNormalizeEnabled)
3088 return myIsGlNormalizeEnabled;
3091 Standard_Boolean anOldGlNormalize = myIsGlNormalizeEnabled;
3093 myIsGlNormalizeEnabled = isEnabled;
3095 #if !defined(GL_ES_VERSION_2_0)
3100 ::glEnable (GL_NORMALIZE);
3104 ::glDisable (GL_NORMALIZE);
3109 return anOldGlNormalize;
3112 // =======================================================================
3113 // function : SetPolygonMode
3115 // =======================================================================
3116 Standard_Integer OpenGl_Context::SetPolygonMode (const Standard_Integer theMode)
3118 if (myPolygonMode == theMode)
3120 return myPolygonMode;
3123 const Standard_Integer anOldPolygonMode = myPolygonMode;
3125 myPolygonMode = theMode;
3127 #if !defined(GL_ES_VERSION_2_0)
3128 ::glPolygonMode (GL_FRONT_AND_BACK, (GLenum)theMode);
3131 return anOldPolygonMode;
3134 // =======================================================================
3135 // function : SetPolygonHatchEnabled
3137 // =======================================================================
3138 bool OpenGl_Context::SetPolygonHatchEnabled (const bool theIsEnabled)
3140 if (myHatchStyles.IsNull())
3144 else if (myHatchStyles->IsEnabled() == theIsEnabled)
3146 return theIsEnabled;
3149 return myHatchStyles->SetEnabled (this, theIsEnabled);
3152 // =======================================================================
3153 // function : SetPolygonHatchStyle
3155 // =======================================================================
3156 Standard_Integer OpenGl_Context::SetPolygonHatchStyle (const Standard_Integer theType)
3158 if (myHatchStyles.IsNull())
3160 if (!GetResource ("OpenGl_LineAttributes", myHatchStyles))
3162 // share and register for release once the resource is no longer used
3163 myHatchStyles = new OpenGl_LineAttributes();
3164 ShareResource ("OpenGl_LineAttributes", myHatchStyles);
3165 myHatchStyles->Init (this);
3168 if (myHatchStyles->TypeOfHatch() == theType)
3173 return myHatchStyles->SetTypeOfHatch (this, theType);
3176 // =======================================================================
3177 // function : ApplyModelWorldMatrix
3179 // =======================================================================
3180 void OpenGl_Context::ApplyModelWorldMatrix()
3182 #if !defined(GL_ES_VERSION_2_0)
3185 core11->glMatrixMode (GL_MODELVIEW);
3186 core11->glLoadMatrixf (ModelWorldState.Current());
3190 if (!myShaderManager->IsEmpty())
3192 myShaderManager->UpdateModelWorldStateTo (ModelWorldState.Current());
3196 // =======================================================================
3197 // function : ApplyWorldViewMatrix
3199 // =======================================================================
3200 void OpenGl_Context::ApplyWorldViewMatrix()
3202 #if !defined(GL_ES_VERSION_2_0)
3205 core11->glMatrixMode (GL_MODELVIEW);
3206 core11->glLoadMatrixf (WorldViewState.Current());
3210 if (!myShaderManager->IsEmpty())
3212 myShaderManager->UpdateModelWorldStateTo (THE_IDENTITY_MATRIX);
3213 myShaderManager->UpdateWorldViewStateTo (WorldViewState.Current());
3217 // =======================================================================
3218 // function : ApplyModelViewMatrix
3220 // =======================================================================
3221 void OpenGl_Context::ApplyModelViewMatrix()
3223 #if !defined(GL_ES_VERSION_2_0)
3226 OpenGl_Mat4 aModelView = WorldViewState.Current() * ModelWorldState.Current();
3227 core11->glMatrixMode (GL_MODELVIEW);
3228 core11->glLoadMatrixf (aModelView.GetData());
3232 if (!myShaderManager->IsEmpty())
3234 myShaderManager->UpdateModelWorldStateTo (ModelWorldState.Current());
3235 myShaderManager->UpdateWorldViewStateTo (WorldViewState.Current());
3239 // =======================================================================
3240 // function : ApplyProjectionMatrix
3242 // =======================================================================
3243 void OpenGl_Context::ApplyProjectionMatrix()
3245 #if !defined(GL_ES_VERSION_2_0)
3248 core11->glMatrixMode (GL_PROJECTION);
3249 core11->glLoadMatrixf (ProjectionState.Current().GetData());
3253 if (!myShaderManager->IsEmpty())
3255 myShaderManager->UpdateProjectionStateTo (ProjectionState.Current());
3260 // =======================================================================
3261 // function : EnableFeatures
3263 // =======================================================================
3264 void OpenGl_Context::EnableFeatures() const
3269 // =======================================================================
3270 // function : DisableFeatures
3272 // =======================================================================
3273 void OpenGl_Context::DisableFeatures() const
3275 #if !defined(GL_ES_VERSION_2_0)
3276 glPixelTransferi (GL_MAP_COLOR, GL_FALSE);
3280 * Disable stuff that's likely to slow down glDrawPixels.
3281 * (Omit as much of this as possible, when you know in advance
3282 * that the OpenGL state will already be set correctly.)
3284 glDisable(GL_DITHER);
3285 glDisable(GL_BLEND);
3286 glDisable(GL_DEPTH_TEST);
3287 glDisable(GL_TEXTURE_2D);
3288 glDisable(GL_STENCIL_TEST);
3290 #if !defined(GL_ES_VERSION_2_0)
3291 glDisable(GL_LIGHTING);
3292 glDisable(GL_ALPHA_TEST);
3294 glDisable(GL_LOGIC_OP);
3295 glDisable(GL_TEXTURE_1D);
3297 glPixelTransferi(GL_MAP_COLOR, GL_FALSE);
3298 glPixelTransferi(GL_RED_SCALE, 1);
3299 glPixelTransferi(GL_RED_BIAS, 0);
3300 glPixelTransferi(GL_GREEN_SCALE, 1);
3301 glPixelTransferi(GL_GREEN_BIAS, 0);
3302 glPixelTransferi(GL_BLUE_SCALE, 1);
3303 glPixelTransferi(GL_BLUE_BIAS, 0);
3304 glPixelTransferi(GL_ALPHA_SCALE, 1);
3305 glPixelTransferi(GL_ALPHA_BIAS, 0);
3308 * Disable extensions that could slow down glDrawPixels.
3309 * (Actually, you should check for the presence of the proper
3310 * extension before making these calls. I've omitted that
3311 * code for simplicity.)
3314 if ((myGlVerMajor >= 1) && (myGlVerMinor >= 2))
3316 #ifdef GL_EXT_convolution
3317 if (CheckExtension ("GL_CONVOLUTION_1D_EXT"))
3318 glDisable(GL_CONVOLUTION_1D_EXT);
3320 if (CheckExtension ("GL_CONVOLUTION_2D_EXT"))
3321 glDisable(GL_CONVOLUTION_2D_EXT);
3323 if (CheckExtension ("GL_SEPARABLE_2D_EXT"))
3324 glDisable(GL_SEPARABLE_2D_EXT);
3327 #ifdef GL_EXT_histogram
3328 if (CheckExtension ("GL_SEPARABLE_2D_EXT"))
3329 glDisable(GL_HISTOGRAM_EXT);
3331 if (CheckExtension ("GL_MINMAX_EXT"))
3332 glDisable(GL_MINMAX_EXT);
3335 #ifdef GL_EXT_texture3D
3336 if (CheckExtension ("GL_TEXTURE_3D_EXT"))
3337 glDisable(GL_TEXTURE_3D_EXT);